It is a valid point though. The XIV community has proven if there's something that can be abused in the game it will be abused. So using it to avoid bad rep every few weeks is indeed a perfectly valid point. Whether you feel so or not is your opinion, however in terms of abuse, it's valid.
Much like only allowing people who are gender swapping to change names is perfectly valid too, you personally just may not agree with it.
SE is a company, they're the ones running the show they can deem what they can/should/don't/won't/shouldn't need to spend resources on.There is no valid reason to not allow players to change their name if they want to. SE should not be spending resources