1. "Bitcoin is a bubble." - Technically, bitcoin can be classified this way (just like the stock market), because the price of bitcoin grows due to new "infusions" of investors into this asset. As soon as this stops and the reverse effect of withdrawing money from this asset begins, a "rollback" of the price occurs, which creates volatility. It is similar to how a "bubble" inflates and deflates, but doesn't burst completely, as long as there is faith in the future growth of this asset. It would be interesting to see what happens to this "bubble" as soon as faith in the future of this asset evaporates (for whatever reason), for example, a mass panic "outflow" of investors.
This chart
https://charts.bitbo.io/yearly-candles/ shows that Bitcoin is not a bubble since 2009.
5. "Bitcoin is used only by criminals." - Instead of "only" there should be "and". That is, it should not be denied that criminals also use bitcoin (just like traditional money).
Everything on Earth can be used by criminals and nothing is only used by criminals. "Bitcoin is used only by criminals" is a narrative of people who really hate Bitcoin.
7. "Bitcoin will be defeated by a better altcoin" - CBDC will do this.
Altcoins are scam and many of them die with time. Altcoins can not be a next Bitcoin and they're not Bitcoin killers. In fact, no altcoin successfully kills Bitcoin, but they suicide and die with time.
How Many Crypto Coins Have Died?CBDCs are even worse than normal altcoins because CBDCs are completely centralized and worse than altcoins because the centralization belongs to governments.