I am thinking for those who wants to hold bitcoin, this is the perfect opportunity to acquire bitcoin without having to buy it on your own. Lessens the steps to be taken but I see your point because after all, you would not be using all your salary to buy bitcoin so at least half has got to be converted to fiat. But if there could be a time when even grocery stores accept bitcoin then that problem will be solved.
If you don't have to buy bitcoins, you will not have to pay for trading fee, withdrawal fee from centralized exchanges or price difference from in-person trades. So theoretically it is very good to receive bitcoin directly from your company and it is more helpful if they allow you to provide them a receiving address from your non-custodial wallet.
Above are advantages, but there are also disadvantages that certainly affect you if you don't have reserved fund to use and still need to use your monthly salary payment. If you have such need, you will have to sell your bitcoin, and it costs you on-chain transaction fee, trading fee but more possible important thing is volatile price change of Bitcoin.
I find that receiving salary in bitcoin has more disadvantages than advantages. Bitcoin volatility doesn't just affect our daily lives because we also need to convert some bitcoins into fiat money to spend. That will also affect our bitcoin accumulation, it makes accumulation more passive instead of active. It would be a loss when we get paid and bitcoin price skyrockets, but then price starts to plummet and we don't have fiat to buy the dip. Meanwhile, receiving salary in fiat currency will help us be more proactive in accumulating bitcoin with better discount.