The comment I was replying to was complaining about appealing to the masses, emotional arguments, and compromising on certain issues to get progress on other issues.

If you view a regime as fascistic, you still need to be able to do all the above.

Nazi Germany was defeated by an alliance of communists and capitalists who immediately started a Cold War when the Nazis were defeated. That required compromise, propaganda, and all the other distasteful things I called “all politics”.

Dealing with existential risk will require collaboration on a similar scale.