In which ever asset that my salary is paid, I will accept so far as I can do with the money what ever I please. If am paid in fiat and I wish to invest in Bitcoin I will buy any percentage I please using my salary that was paid in fiat. If am paid in Bitcoin I can do with it what ever I please.
So whatever it is, it's always that we're able to use any of it. Getting paid in fiat, we will still invest in Bitcoin and if we get paid in Bitcoin, we're going to sell it for fiat. So, whichever you agree with, there's always the use that we're going to do with it. In short, we are can do whatever we please to use it. Either for investing or buying our goods, so it simply means that we get paid for our hard work.