I'm not going to take a letter that uses silly names seriously. That's grade-school rhetoric.

"...then they laugh at you"

What silly names?

"Swindle"

That is not a silly but a precise name.

It's Stallman. No one should take him seriously, ever.

Ad hominem fallacy.

Just because is ad hominem, doesn't mean it's a fallacy. Sometimes a person's reputation is so bad you don't need to give any benefit of the doubt for his/her opinions.

Whether or not you turn out to be correct has no bearing on whether your reasoning was fallacious.

Most so-called fallacies are empirically effective (though not valid proofs in classical logic). Public statements from kooks really are false at a much higher rate than public statements from non-kooks.

History proves that revolutionaries often make bad leaders.

Very interesting