Any internet platform that didnt moderate would be overwhelmed with spam, porn, scams, hate, etc. Censorship and moderation are the same, a set of rules you must follow to participate. Gab is has huge problems with porn spam because of free speech policies.

Imagine if email providers were not allowed to filter. Your email would be totally unusable.

Enacting no filters beyond what's illegal would make most of the internet unusable. Like imagine if HN had no moderation? It would lose its original purpose.

So what do you mean support free speech exactly? Allow people to freely post porn, scams, lies, death threats?