On a more personal level I would rather get paid in something with more stability, the world economy is somewhat rocky as it is, no need to add more instability to anyone's life.
You mustn't know the long term value proposition of Bitcoin and the short-mid term destiny of fiat if you believe that fiat is more stable than Bitcoin.
Do you know how inflation or monetary policy works and how while you hold money, it keeps its perceived "value" while the cost of everything you can get for it goes up? That's not stable.
We are talking about whether it is better to pay in bitcoin or fiat, which means we are talking about the short term as the salary will be used for daily needs, and the rest for savings and investments...And in the short term, fiat will be more stable than bitcoin, fiat doesn't lose 5% or 20% in a day, a week, but that always happens with bitcoin. So I don't see any benefit to getting salary in bitcoin either.
I prefer to receive my salary in fiat because I actively plan my monthly expenses and the rest I will invest in bitcoin. Furthermore, I find I have more advantages in holding fiat and waiting to buy a DIP than just holding a fixed amount of bitcoins I receive.
For example: you get 1 btc at 30k$ and I get 30k$. But then bitcoin drops 10% and you keep holding and don't dare to sell because it's depreciating, while I'll use that $30k to buy BTC and my bitcoins will be more than yours. Which one has more advantages? Given the volatility of bitcoin, it is more suitable as an investment asset than a currency. And to get a return on investment, it is necessary to buy low and sell high.
OK - that's your opinion but that does not mean that this is the economically correct option.
If you are planning your expenses in fiat for the month, put that in Tether. Or, put more months worth of expenses into tether and keep on doing that until your expenses are covered for months or years, then save in Bitcoin, as the long term outlook will bring gains. You can use DeFi to earn interest on the tether or p2p lend like HodlHodl, and use P2P marketplaces like agoradesk or hodlhodl to withdraw it into Fiat. Ultimately you best inflation this way and create new opportunities to off-set it, while you can save Btcoin instead of dollars.
The point of being paid in Bitcoin is to use that as the primary savings method instead of fiat. Obviously opting into bitcoin salary is optional, if you are really living week by week or your salary only covers your monthly expenses, then it won't be of preference.
In terms of seeing Bitcoin as a depreciating asset, that's factually incorrect both by history and from a long-term view.