WoW has been doing it for years, you could really tell how it hurt them. Right? And many of those items actually did have advantages, like the mounts with higher speed/etc.
People will get over it or leave, you can pretend to be entitled and butthurt all day long but at the end of the day they are a business with employees who have families with mouths to feed. If a sector of your business has a potential for profit that can help make up for other departments that are not doing as well at the moment you seize the opportunity. Business 101. For those of you that do "vote with your wallet" the amount of money lost by your leaving will be made up in spades by these transactions, they won't be crying a river over it I assure you.
If/when you eventually do get over it and come crawling back you'll be behind the curve on endgame because you were angry at a business behaving like a business. SquareEnix is not your friend/lover, they make games to make money (Just like you go to work every day to make money to obtain the things you like/need) and if you see this as some sort of betrayal you might be a bit naive.