I'd probably whine much less if I had, say, an inventory of at least 120 spots.
But there are circumstances where also blinking 5 times in a second can be annoying too (in before someone mentions BlinkMeNot).
Also some gearswaps, especially ones for mages, can sometimes be pretty complicated to handle without stuff like spellcast.

I feel fine about the gearswaps for my melee jobs, also because where possible I chose to go for the "compromise" of a gear which is slightly worse than another, but that I can use on 4-5 jobs instead than just one.
But on mage jobs urghhh it's a mess, and I'm not even a pro on mages, my SCH probably has 2/3 of the gear a "pro" SCH has.