This is probably good advice, just remember that crypto is also digital and totally transparent (mostly). If you obtain your crypto via an exchange, then your wallet can be positively linked to your physical person, and (eventually) prohibiting transactions by blacklisting wallets would be trivial. :(
I imagine that is a ways off still because crypto is not _that_ mainstream, but I suspect the time to get started and make the effort to anonymise your wallet is now.