Maybe, but if you cannot say something simple as "here is something you can use for free, use at your own risk, we are not liable for anything", then that is a clear indication of the bankruptcy of the law, imho.

Since the law is very well developed in the EU, I think the people who wrote the license were just lazy.

The AI act being "well developed" means it's dense enough that compliance can't be done without the backing of a major corporation's legal team. Tencent is a major corporation, but this is a janky research project that's not part of a product. The researchers don't have legal knowledge of EU regulations, and they probably have limited or zero access to anyone who does. Cutting off EU countries is the safe and responsible choice.