If your definition of “censorship free” is “not allowed to remove CP and similar content that comes with criminal liability for the site owner”, then yeah they do “censor” things.

What people normally mean when they say “free speech” is in the US first amendment sense, not in the “you can post videos of horrible crimes you’ve committed” sense.

Gabs content policy is pretty short and basically just says this. No CP and other criminal content, anything protected by first amendment is ok.