Mogstation Mounts...

[Malzian]

It went on the Mogstation because only so many people can attend Fan Fest and this year they can't attach it to a Fan Fest stream purchase since they're streaming it for free on Twitch.

[Vidu]

It went on the Mogstation because only so many people can attend Fan Fest and this year they can't attach it to a Fan Fest stream purchase since they're streaming it for free on Twitch.

Exactly - they're giving us the whole stream for free this time and as a result of that the cost of the items got a bit lower, even.

The streams (with the FanFest bonus codes) were about 30€ the last times and with the pets being different from region to region you'd had to spend 90€ to get all three pets.
This time, you get the stream for free; the items at a general lower cost and to pick and choose which ones you actually want instead of paying a flat out 30€ for a whole package of which only one thing might intrest you.
Overall: a very customer friendly solution this year.

...and the mount is actually a way to appriciate loyal customers (those who attend the FanFest) and not locking everyone else who couldnt attend for whatever reason out of it.

And while I do think that it would be about time that we get some ingame appriciation again, lets please not forget that the veteran rewards went away due to player request; that we got that Falcon-mount-campaign last year; that we got the magitek-claw from achievment certificats (meant as a replacement for vet-rewards) somewhen this year... there is stuff we're getting as some sort of "Thank you!", but people constantly choose to overlook that...
Now, would it be nice if everything on the mogstation would be free ingame? Sure.
Would it also be nice if the mogstation-money actually improved this game instead of probably funding FFVII-remakes and FFXV-DLCs? Absolutly.
But is everything on the mogstation now, like posts like this one sort of seem to imply? No. No, it is not, there is still plenty of stuff in the game.