They're talking more about Expert Systems or Inference Engines, which were some of the earlier forms of applications used in AI research. In terms of software development, they are closer to databases than traditional software. That is, the system is built up by defining a repository of base facts and logical relationships, and the engine can use that to return answers to questions based on formal logic.
So they are bringing this up as a good use-case for AI because it has been quite successful. The thing is that it is generally best implemented for specific domains to make it easier for experts to access information that they can properly assess. The "one tool for everything in the hands of everybody" is naturally going to be a poor path forward, but that's what modern LLMs are trying to be (at least, as far as investors are concerned).
Ukraine desperately wants the United States to continue supporting them, and currently, the US is run by a group that has been mixed in their support. Trump in particular has been rather unsupportive of Ukraine. Trump is also a figure that is very easily swayed by flattery, so if Zelensky can show himself as among the few that is saying good things about the US's actions in Iran, that may help them secure more solid continuing support in their struggles against Russia.
So it's not just that they have little cause for sympathy with Iran, but also that they have good reason to speak out in favor of the US.