In fairness to the Grumps, generally not releasing any statement, with the exception of a complete denial containing zero apology (if there are damaging untrue things being alleged that are gaining traction), is the best way to deal with these things assuming the most that happened legal hanky-panky.
Of course you shouldn't deny things that demonstrably happened, that starts the "but they lied about THIS" cycle which fuels any fires, so I'd argue a denial is the wrong tack here. So just don't bring the embarrassments up and ignore them, which appears to have happened.
That I agree with LullerDerbyRollin: I'm pretty sure this is not an intentional strategy and simply being paralyzed in fear that your fans are about to turn on you (it's not like Arin has no idea what the cancel mob can do, pretty sure he's helped a couple of 'em), causing inaction which just happened to be the best course of action by complete coincidence.