Making the tool easy to use and allowing it to just immediately post on Twitter is much different than simply providing a model online that people can download and run themselves.
If you are providing a tool for people, YES you are responsible to some degree.
Think of it this way. I sell racecars. I'm not responsible if someone buys my racecar and then drinks and drives and dies. Now, I run an entertainment venue where you can ride along in racecars. One of my employees is drunk, and someon dies. Now I am responsible.
In, like, an "ask a bunch of people and see what they think" way. Consensus. I'm not talking legality because I'm not a lawyer and I also don't care.
But I think, most people would say "uh, yeah, the business needs to do something or implement some policy".
Another example: selling guns versus running a shooting range. If you're running a shooting range then yeah, I think there's an expectation you make it safe. You put up walls, you have security, etc. You try your best to migrate the bad shit.
If you are providing a tool for people, YES you are responsible to some degree.
Think of it this way. I sell racecars. I'm not responsible if someone buys my racecar and then drinks and drives and dies. Now, I run an entertainment venue where you can ride along in racecars. One of my employees is drunk, and someon dies. Now I am responsible.