Maybe, but at least Reddit is big enough it can say “no”. You have no rights B over whether it dies, but it can. A smaller device may not be able to afford to.

What would happen on Lemmy? I seriously doubt anyone hosting Lemmy could afford a legal battle with something that big.

A better argument is “shut the hell up”. You’re playing with fire by discussing something a place deems illegal, on a service under the legal jurisdiction deeming it illegal. You really can’t assume any right to privacy online. Use your VPN first, and discuss it in a jurisdiction where it is ok. Countries are better suited to “just say no”