They're finding new space because of Trump & republicans but their future isn't certain. If democrats win the next election we don't know how they'll handle crypto policies. America on it's own shouldn't decide the fate of mixers.
The thing is, American politics have become too extreme over the last 10 years or so. Maybe because nerves swelled over Trump entering politics. Either way, democrats have not been friendly to crypto at all (simply because Trump supports it) and we have seen the Biden administration try to do progressively worse things to crypto.