They publish a list of exit nodes yes.

Even if they don't, it can be determined whether a particular node is an exit node on Tor.

Information which can be used to selectively block access to those connected to Tor.

That way, you are correct. 

Still better than a VPN because there is no entity to go after, since the code for the protocol is open source.

The weakness you mention exists by design and can only be addressed by being censorship-resistant on an ISP level. 

 but they do publish them by design which  think is dumb

the reality is nothing is safe and perfect

they probably can ip scan the tor network too the hard way 


 

 Fair.

I've been looking for things that can enable censorship-resistance at the internet connection level though. 

Only thing I have come across is mesh networks. Do you know of any? 

 no,  i wish

we need that more than nostr


is ipfs mesh-ish?

 

 Not sure. I don't think IPFS solves for being censorship-resistant at the ISP level though.