It also really is a keyboard vs controller thing, since I remember playing WoW with Keyboard and having 1-5, shift, control, and alt modifiers to those (20 altogether), 6-= (8 more buttons) of situational stuff, and then other hotbars on the side for professions (given, you didn't swap into those like FFXIV), mounts, foods, and utility stuff for the class like Mage teleports or Druid forms and such. But, it was frankly ridiculous having roughly 50 buttons across all my hotbars, and only around 15 of those were routinely used in combat, with another 5-10, depending on class, being highly situational. At least it made sense there, since WoW was more of an adventure game and I didn't need "Cooking" or "Eyes of the Beast" in an easy to reach button since...you know, I wasn't using that during my burst phase in combat.
