I've noticed that out of all Pokemon, Skarmory seems to be one of the most liked, while not being one of the most loved
-On nearly all rankings of Pokemon, Skarmory ends up in the top 100
-When people rank Pokemon by tiers, either all, just johto, or just steel/flying, Skarmory ends up in the top 2 tiers
-has a spirit in Smash Bros, and had a stage appearance and trophy before that
-has not had any controversy, an all around good design that appeals to most people, and old enough that it appeals to nostalgiafags
-has a unique typing, the only one to have this typing before generation 7
-does decently well in smogon without being infuriatingly overpowered
-not a waifu/shillmon, so people don't hate it off the bat
I feel like most Pokemon have their fans and people who dislike them, but universally Skarmory seems loved.