If you think that's bad... Wait until you see the subscriptions for RETAINERS and the COMPANION APP for the game >.>

MogStation cosmetics are mostly harmless. Sure, it kind of sucks for them to put so much effort into making stuff to sell for like $30 without a chance to ever earn them in the game... But on the other hand, this directly pays for the time they spend doing this.

Given that game development is a business, everything that is worked on needs to be weighed against how much it costs to spend time working on it vs the payoff it will give.

Though, this is somewhat marred by the fact that Square Enix actually siphons off the majority of the money FFXIV makes to spend on developing other games instead (Such as the FFVII remake and FFXV or FFXVI. Maybe also that Left Alive title that bombed...)

*Sigh* I really wish SE would let XIV's dev team get all the resources that XIV generates so they can afford to spend more time on things...

As an unrelated side note:

I find it quite amusing that they sold a literal whale mount on the MogStation for all the whales to buy