No, just about everyone critiquing RMS's behavior is saying that it negatively affects his own movement. That it makes it more difficult to advocate for Free Software, that it diminishes the FSF.
> Well, it is absolutely true, for their cause, not his.
You have it backwards. Open Source is so much bigger than Free Software, that it's not even funny. The Open Source people are not scared of RMS affecting a movement widely accepted in almost every major tech company.