Uganda would certainly issue a judgement against you. The difference would be their inability to enforce it because none of the relevant parts of the DNS operate in Uganda.

It's now well-established on the Internet that a court may force anyone in the path to enforce their decision. ISPs are regularly forced to block foreign websites, without any implication of liability on the ISP's part, simply because the ISP has the technical ability to block them and the court has the ability to enforce an order on the ISP. This is the case when Spanish ISPs have to block Cloudflare. The same applies to the DNS, which is based in America. Thanks to Texas for publicizing this DNS vulnerability which must urgently be fixed.

I'm not sure what your point is. Courts generally follow precedent, not your opinion about what is or isn't logical. Do you want me to explain to you the nature of extraterritorial jurisdiction, extradition treaties, etc., distinguishing your hypothetical from this case? I don't have a dog in this fight. If you really want to understand what's going on I would suggest you simply look up the complaint this AG filed, which will give the basis for jurisdiction, which the court evidently accepted.