The problem isn't Framework sponsoring or featuring nazis (pretty sure they just didn't know). The problem is that when people told them: "Hey, you're promoting people that literally want to kill me, I don't feel save here anymore". They didn't make a clear statement that they're anti fascist but said some corporate marketing bullshit about big tents and inviting everyone (which I personally and many others understood as them being cool with nazis in their mids as well because they didn't want to scare away investors).