I'm having trouble even understanding the question, because I think your usage of "free speech" means something different than is normally intended. Free expression and free will always have an implied caveat, like "free will except where it impedes that of another". Free speech is always going to have a Venn diagram with "behavior", some of which is illegal. So if you're asking where you can go do illegal stuff, tha…
They also as much as said "There's places where you can do this but they're cesspools" which almost makes me feel like the real question is "Is there any way I can have the experience of moderated discussion without any risk of me being moderated?" to which the answer is 100% "Yes, your own forum, but don't be surprised if other people aren't sold on the value proposition."
The problem with many of these social media platforms (X, Threads, Insta, etc) is that they are actively disincentivized to enforce the first requirement of those two. Strict KYC is (rightly) viewed by many as overtly invasive of privacy, it would hurt the volume of content on these platforms (because 90% of it is AI generated engagement bait), and it would hurt their user signup and retention metrics (being ignorant of how many bots and alts are on your platform is vastly better than knowing and doing something about it).