OK, but our First Amendment allows Nazis to speak freely in this country. No one likes that, except the Nazis, but does that make us all collaborators?

It allows them to speak without legal repercussions from the government. The first amendment doesn't say "Patreon has to allow any hateful dipshit to use their service"

You're reading me completely backwards. If Patreon are collaborators for allowing Nazis to use their platform, then are we collaborators for allowing Nazis to have free speech in our country?

If the answer to the first is "yes", then why is the answer to the second "no"?

https://xkcd.com/1357/ doesn't mean patreon has to host it

I never suggested it did.

You did though, by invoking the first amendment, which really doesn't apply in this context.