Let's not forget this would be coupled with a Live Letter a month or so earlier discussing all the various server limitations preventing SE from offering said features to everyone.
So far as I'm concerned, the app is a shameless cash grab. It's not especially game-breaking, but it is beneath the dignity that SE used to have as an organization. Alongside other shameless cash grabs, like their meddling with Deus Ex: Mankind Divided or their decision to release Rise of the Tomb Raider as a timed Xbox exclusive, it simply makes me less likely to buy future SE products. It's the cost of doing business in such a grabby fashion, but I'm sure they know that.
Edit / Aside: It's worth keeping in mind for people on both sides of the aisle that whether or not something constitutes 'P2W' is a subjective sort of thing. Personally, I view the Mog Station as P2W, because I view Glamours and Mounts as key rewards in FFXIV. Others don't. That's fine - P2W is in the eye of the beholder.
That being said, even if someone doesn't view the app or Mog Station or whatever as P2W, it should be concerning that significant numbers of others clearly do. I personally am less likely to support SE and FFXIV because of the optional paid features and content. It's not strong enough for me to stop playing right now, but it'll be a significant factor when I eventually do. I've had other friends quit over it. Seeing so many on the forums laugh off my opinions tends to push me closer to the point of quitting for good, as it lends evidence to the fact that I'm not an intended customer for FFXIV.
Now I can't speak for other forum-goers, but I'm guessing I'm not alone in feeling this way. It's risky for SE to continue disregarding our collective opinions. There's a tipping point somewhere, a point at which people will start leaving for less-monetized MMOs. I don't know where it is, but SE keeps inching closer. When, and if, that point is reached, it'll be a negative outcome for all players of FFXIV - regardless of whether or not they're OK with things like the app or Mog Station.