Primarily coin joining (wasabi, whirlpool, etc)

With KYC’d coins, these help to privatize your future transactions. For example, if your employer pays in Bitcoin but it’s none of their business whether you spend it on rent or a mortgage or Home Depot or the pub.

Coinjoins can anonymize it. But it doesn’t change the centralized entity knowing what you received to begin with.

In other words, don’t try to get out of taxes and stuff - privacy is simply valuable for its own sake.