I mean, wherever there is market activity, there will be price impact. How high or how low the impact is, that's the question. And since it's safe to assume that miners need to sell their mined coins(at least some) to be able to pay for electricity, obviously, there will always be price impact from them(sell pressure).

With bitcoin, nowadays miners are mostly join big mining pools and they mostly come from big mining farms. It is unrealistic for small bitcoin miners to survive through all market dumps. When small miners suffer enough pressure and temporary losses, they will give up and sell off their bitcoin. Fortunately, because they are small miners their impacts on price will insignificant.

Very contrasting to small miners, big miners, big farms, big pools have enough reserved funds to go and survive through market dumps. During dumps, they will use their reserved funds to pay for electricity costs and keep holding their bitcoins and wait till good price to sell and take profits.

Miners and mining activities have impacts on bitcoin, but it also relates to market manipulations too. What do you think of plans of miners to turn off their rigs and create massive waiting/ unconfirmed transactions on the network? Just to cause FUDs, and result in high transaction fees. They will get higher transaction fees while they will also get chances to buy back very cheap bitcoin. After 2 to 3 times of difficulty adjustments, from 28 to 42 days, they will turn on their rigs again. What's a plan.

What's the big deal?

Miners are probably not paying their regular mining expenses in Bitcoin. Their electricity consumption, which forms probably the largest daily expense of their operation, has to be settled in fiat most probably and so they need to regularly let go of their Bitcoin.

The miners are major players in the market. And they are the last persons who would want the price to fall as that would mean losses to their businesses. And so when they are selling heavily it must somehow follow that their assessment says there is sufficient demand that could easily absorb the selling pressure.

I believe the miners won't dump their BTC just like that, oblivious of what it could possibly cause to the market.

Wait, how is miners not selling the mined coins going to centralize the network? How much coins the miners hold doesn't matter, as hashrate is the one that matters with proof of work.

What recent price action?The Bitcoin price went down from 9,2K USD to 9,1K USD.
This is a ridiculously low price volatility and you are talking about price impacts.
Yes,the miners could have impacted the June 23 price drop.And so what?They can sell their mined coins,in order to pay their bills.I can't be mad at them for selling their coins and creating a bearish market.
If the price is still low,there's chance for more people to join the crypto world by buying cheap Bitcoins.
The crypto traders could benefit from both bearish and bullish market.

i never believe this type of analysis that comes with zero proof specially when they come from an analysis company that is trying to advertise their business as a blockchain analyzer!
for example in this case it is only showing us the price move and an arbitrary chart with some lines showing miners moving coins (MRI) but doesn't say anything about how they came up with a way that could show them those coins that moved by miners (the coinbase transactions paid to the miners from the mining pool) is actually being sold. if i had to guess i'd say the coins were simply moved from one wallet to another, maybe even mixed for more privacy (miner connecting to the pool doesn't have privacy) and now this analysis company is calling THAT selling.

do miners affect bitcoin price? of course they do. they are a part of the market participants and their actions affects the market.
is it direct effect? not anymore than any other investor's actions.

I am sure miners have always influenced the market. Whenever a large number of coins are sold or bought, this can affect the price. And it can be not only miners.

Yes, the sell pressure they're giving the markets surely dropped significantly due to the quite recent halving, but that's still 900 bitcoin being generated per day. While that amount being sold per day wouldn't necessarily like crash the markets(assuming actually all 900 are being sold), it still has a relevant amount of sell pressure especially noting that this is an everyday occurrence.

OTC is only growing just as the amount of coins being made is going down. I presume all the talk of Grayscale buying every coin mined can be picked apart easily, but there's no shortage of other players.

Miner dumping was no doubt a prime factor in 2011/12/13 and beyond. If you're a miner who has to dump on an exchange by this point you're doing it wrong or are socially maladjusted and are too frightened to contact anyone to sell directly.

Basically many will speculate that the short term impact of bitcoin halving is now occurring, this is by means of miners either quitting or selling bitcoins at higher prices which is IMO is not true, but what is true is the actions of newbies which is by far, being affected by the hype so the tendency is it affects the market in short term.

Though everyone and everything affects bitcoin's price, the fluctuations of demands caused by events affect the fluctuation of the bitcoin's market price.