If you're on the left and you are part of the Democratic party, you will have to make compromises. That's as true for Bernie as it is for AOC as it is for Lee Carter. I get why folks here want these politicians to go at the DNC with both barrels but they do that and they won't be in power. Question is whether you think compromises are worth having leftist politicians in positions of power. Frankly IMO Bernie endorsing Biden kinda sucks but that's exactly the kind of compromise that has to be made and isn't really that big a deal.