This is scary for those who doesn't have a lot of money received from their salary since they will surely need to sell it to fiat. If I am one of those people who will receive bitcoin as their salary then I wouldn't say to receive bitcoin in full but rather a portion of the salary. In my opinion, it's better if you only receive bitcoin as your salary which is a portion taken from your fiat salary rather than your full salary converter to bitcoin. In that way, you don't need to buy bitcoin yourself and you still have some fiat money for whatever you need that is important like daily necessities or emergency funds when you are in need of caah.
Employers should not force people to accept Bitcoin only payment regarding on this matter and they give people an option what they prefer to receive.
Since it will just create further trouble if people don't know or even like Bitcoin since they might lose some money especially that Bitcoin is volatile.
But for those knowledgeable individual on Bitcoin then its really fine to receive that since it make their investment journey became more easy especially that they could able to receive Bitcoin directly on their salary. For me I prefer to receive Bitcoin since I know how to use it for good things that possibly beneficial for long term.