I don't think it is necessarily unfair or cheating, even, to have people pay hard-earned gil for carries.

It lets people play DoH/DoL that they enjoy while still catching up for the latest content for whatever the reason (read: Alisaie's butt looks nice).

It also makes a lot of sense RPwise to have a spoiled rich brat buying his way into 'fame'. Isn't it a very reasonable (if not common) fantasy trope?