I mean, the courts have decided it's impossible in the context of current EU laws. The EU could always change those laws. But I think the likelihood of that is low, both because they're for relatively popular (in Europe) goals, even if the malicious compliance outcomes themselves are somewhat unpopular, and just the EU's makeup in general makes it a very slow moving body and it'd be relatively hard to get the agreement to reverse here.
Schrems II is based on the argument that there is no due process for EU citizens to even check if data collection in the US is legal. That's a constitutional argument, it doesn't help to change laws. Or, well, as "constitutional" as it can get with the EU.