>is TOR an answer to this ?

I've found Tor is mostly useful for reading, not participating. Exit nodes get blocked from registering on most sites. One workaround is to register at a café or library then use the account over Tor, but sometimes even if you're being civil (see my comment history for a a pretty good picture of the style of discussions I have anonymously) sometimes you'll wake up to find the account nuked.

Tor exit nodes are the _first_ thing they ban! If your origin is not from within one of the top residential ISPs then you can expect to be selected for enhanced screening.

But what if 50% of the adult population starts using it?

Then the law is enforced selectively at the whims of the state.

I heard on here I think (but can't confirm) that renting a cheap server in a data centre and sticking your own tailscale on it is the best way to go.

It is incredibly easy to tell if someone is using TOR. It would be banned before VPNs

Not if you are using bridges

Bridges don't change your exit node.

how?

Only if you want your traffic to flow through NSA-backed honeypots and get caught up in a dragnet.

I mean, it's probably the case that traditional VPNs are also dragnets to some degree, but TOR is a confirmed NSA dragnet.