Oh, I'm all for improvements and variety. I don't even disagree that WoW has more to do out in the world, even if it has the exact same "problem" as FF in that the actual volume of activities depends largely on what you personally find fun to do. My one and only point was that it's kinda silly to complain about FF Mounts being reused and silly when WoW also has several mounts that are reused and/or silly. I personally think WoW does several things better than FF (and several other things worse), but I personally wouldn't raise up a lack of silliness or immersion as reasons WoW did anything better. WoW has plenty of silliness and immersion-breaking nonsense.
Honestly I am kind of curious how the numbers actually would stack up, if you actually took the time to total all recolors in both games and compare actual unique model counts. I'm sure WoW would still be higher, but right now it's got a little less than twice as many mounts, and then you've got to consider it's nearly twice as old as a game... eh. Interesting to think about, but not something I'm personally all that worried about. I have plenty of mounts that I love in FF, and I use them quite often myself. ¯\_(ツ)_/¯