How does the currency you are paid with changes anything (apart from tax evasion) ?

And how is your employer going to pay you in the same amount of crypto each month, if that crypto is mooning? The company's revenue stream is still in fiat, which they must use to buy that crypto to give to you, so eventually you will become too expensive to employ.

How you get paid doesn’t matter. Convert it all to crypto if you want on payday.

But that would be only half the solution. If the value of fiat decreases daily, then you should also negotiate a salary raise every month? Most people do not get raises more than once per year.

Cryptoo is too volatile vs. goods and services.

If you negotiate a 2 BTC/y salary for example you could be rich or flat broke next year depending on factors such as if Elon Musk is pro-dog-based-coin or pro-original-coin

You’d quit if the monthly 1/6 BTC salt was worthless so the job is effectively a call option on BTC

Is there another metric?

CPIH for example in the UK which nominally includes owner-occupier housing costs that aren't part of normal CPI but doesn't contain the elephant in the room which is the increase in house prices.

There's RPI, I guess