I can see how it is a huge deal for both NATO and Russia. Suwalki gap is really the problem for Baltics. So from the perspective of stability ot the entire region, especially Baltics, it is a positive. Whether it was really as necessary for Sweden, not sure.
I see the logic for Finland, although Finnish military is exceptionally well equipped to fend off Russia. It’s got a huge reserve and super modern equipment.
Anyway, the popular opinion in Sweden and Finland is now pro-NATO, and like you say, Russia has transformed to the worse, so a huge own goal for Putin.
Just to be clear about WW2, Finland was not neutral by choice, and wasn’t really neutral at all. Allies wouldn’t pick up a war with Soviets while fighting Nazis. Finland became allies with Nazis and Italians in WW2 - albeit not officially in the axis pact. Obviously that turned out a disaster as well, and Finland paid heavily for it.
Letter: It was not to prevent Soviet conquest but to win back territories lost to the USSR, writes Geoffrey Roberts
www.theguardian.com