Given that the current president of the U.S. is a senile old man who garbles his words and seems lost most of the time, I don't want to criticize leaders of other countries too much.
Nevertheless judging by this video and her responses to criticism, it seems clear that Marin is not a serious leader and one who has a certain contempt for the people she governs (which is typical of young people who suddenly get political power, e.g., ACO). That wouldn't really bother me, because Finland is a country of virtually no importance.
However, now that Russia has invaded one of its neighbors, Finland is suddenly worried that it might be the next victim of the Russian Bear and so it has pleaded to join NATO and to have young Americans and Brits pledge to die to protect its borders and independence. I think our response should be, hey, elect a serious person as your PM and then get back to us in a few years.