The critical part of 'vote blue no matter who' is the voting part. That's the game plan short-term when it's election season.
That does not preclude criticizing the incumbents. Or even the candidates. But no matter how you feel about them, you vote for them to stave off misery, and encourage everyone around you to do the same.
Not voting for them sends a message, but it's the wrong message - and that message is that the populace prefers the GOP. Stop fascism in its tracks and vote blue. Fight for actual progress by doing what you can to forward actual progressive candidates and policies. Like NYC is doing right now.
It boggles my mind how people seem to be incapable of wrapping their head around that concept, and instead continue to insist that we shouldn't be voting for DNC candidates because
uh - it'll make things better??? Somehow??? At this point, the willful ignorance is starting to smack of sealioning.