I only discovered FMA, through the manga, laaate in the print run (I think FMAB may even have already ended by then). But it seems like it must have been complicated when the first anime was the only version available in English for years, and conflicting feelings about which were the 'real' versions. I'm sort of glad I missed all that strife!

I've personally only seen bits of each anime but I think it's awesome that people can enjoy the different versions in different ways. Maybe just because I read American comics and different versions of canon happen all the time, it doesn't seem as big a deal to me? But fandom does like to argue!

(What are your ships for the different series?)