What about mixers?
Discussion
It would be a miracle if normies start to use mixers. It would be even more astonishing if they wouldn't make any failures that consequently lead to their doxxing.
A noob achieves better privacy on Monero out of the box, than a Bitcoin OG knowing exactly what he does after extensive research. And all that assuming to not make any mistakes and trading only with trade partners that will themselves not make any mistakes in the future. Talking about degrading privacy.
Even assuming the miracle happen, there is a deeper problem in Bitcoin that no one care apparently, the centralization of mining by big companies, this is by far the most critical point because it's the network itself, if they can enforce a blacklist upon them, Bitcoin's network is screwed because at this point it will be possible to implement a whitelist. USA and China share more than 50%, USA is leader with 35%, and I expect this share will grow without limits because there is a real interest of controlling the network itself for the government, so they will push for this and we can't stop this. Not necessary to talk about China of course.
I'm not familiar with the concepts of BTC blacklist and whitelist. Sounds interesting.