OP, nobody in that thread yesterday was saying it was a good thing. When a country gets invaded, your responses are always going to be a matter of lesser evils. Apologies for Godwin's-Law-ing this off the bat, but it wasn't great that the Allies drafted hundreds of thousands of people and invaded Nazi Germany. It was still better than every other option.
Godwin's law itself always confused me. Of course comparisons with nazi Germany are overused, but it's literally only 80 years ago. The fact that it could happen such a short time ago means that many of the same dangers, same lessons learned are very likely still completely applicable today. The human behaviors that led to Nazi Germany are still there, in/outgroup thinking, fear of foreigners/others, etc etc etc
So yeah I don't think "Godwin's law" existing as a concept should stop valid comparisons.
It doesn't! It's just a comment on how overused the comparisons are on the internet. To quote Godwin himself:
Although deliberately framed as if it were a law of nature or of mathematics, its purpose has always been rhetorical and pedagogical: I wanted folks who glibly compared someone else to Hitler to think a bit harder about the Holocaust.