I have not read the entire case, but I have read up to the part where the court held that the agency in question had exceeded its statutory authority, not that the technology "cannot" be banned, sanctioned, or otherwise legally squashed. Congress just hasn't done what needs to be done. Whether Congress will do what needs to be done isn't clear. This Congress probably won't.

We have rules for the use of large amounts of cash precisely because only criminals use them. The issue is not the "technology" but the manner in which is is used. The "manner" may correlate with the purpose, but it is much easier to prove manner than motive. If you move more than $10k in crypto, and crypto is "like cash," then you should have to report doing so. If that proves impossible to police, then banning the technology would be necessary and proper, because, unlike cash, there is no need for crypto.