It’s called compromise. Yes, you have to concede some things in order to get the closest thing to what you want. If you don’t compromise, then the biggest group that does band together wins. Compromise with the Dems or we get the right in charge who are compromising with Nazis.
What should we do about the Dems who compromise with Republicans/fascists like Sinema, Manchin, or Fetterman?
Are you saying that Sinema, Manchin, and Fetterman are Republican fascists or that they are Dems that compromise with republican fascists? Is there much difference?
Anyway, the answer is to recognize that they are individuals and not the group. Every coalition is going to have people at both ends. They represent the right end of the Democrat caucus. Bring more leftists into the caucus and you negate their strength. The only reason they have any power at all is that the caucus has such a slim majority. Then vote lefter in their races in the future.
It’s a game of tug-o-war, with ropes pulling in all directions. We need to recognize that not everyone wants to pull in our specific direction, but if we’re busy fighting each other on which leftward direction we go, while the group on the right is aligned and going straight to Christian nationalism we’re going to lose. Figure out alignment during primaries, but pull together in generals, and when turncoats like Sinema swap sides, get them out of office ASAP.