FFXIV is not just a Windows PC game - it has a Mac and Playstation client also. These mods you suggest are PC only.

Also, these mods can often result in unforeseen glitches or game crashes simply because they put so much strain on the underlying game engine.

Personally I love FFXIV because it is mod free and I wish it was kept that way - I wish SE would enforce the policy instead of playing it softly softly. There lack of enforcement has simply resulted in people assuming that's it's fine to use them.