Does the publisher of open model weights have any exposure to compliance requirements if it’s someone else using the software, and they aren’t distributing or operating there?
I read the clause as more of a cya from them. I doubt Baidu is going to come after you if you use their model in the EU, but if Brussels has a problem with it Baidu wouldn’t be on the hook.
Nope, no international treaties exist in that area, regardless of what EU's wannabe dictators want you to think.