(some) Americans are so self-important when they mention states being the same size as other peoples' countries lmao. "Why should we have to point to Germany on a map if Germans can't even point to le bigger Montana? "

It's like, do they feel the same about knowing other big countries' internal divisions? Canadian provinces? Russian federal subjects? Brazilian states? Chinese provinces? Australian states? Cuz the average subdivision in all those countries is larger than the average US state.

And people usually know the most important ones, anyways (Cali, Texas, Florida, NY)

You might not. As an American I've found it useful to know the difference between Sezchuan and Fouzhou. I do know and have worked for a fair number of Chinese immigrants though.