If you really want to get annoyed by rare mounts having their prices cratered - the Deinonychus mount, which originally you could only get as a very rare drop from Dalriada, is also in these chests. That thing used to sell for over 20m gil... now it's down to 600k. I got it from a chest myself and while I'm glad I don't have to farm Dal for it or fork out the gil... it doesn't really feel like as much of an achievement to own now. Pretty much the market for almost everything of value that's in that loot table has tanked - Eureka/Bozja mounts, rare crafted glams, hairs, minions...


But also, I'm not really surprised - the devs seem to have a mindset of "the patch cycle is over, this content no longer exists in our minds, there's no reason for us to preserve the value or rarity of anything exclusive to it" when it comes to things like this, despite the fact that older field ops are still very active (albeit not right now obviously) with dedicated communities.
Meanwhile, things like the Night Pegasus are still only exclusive to Deep Dungeon loot (and the GC gacha boxes but the droprate is so low you could go your entire time playing the game never getting it from that), because that seems to be the only sort of content the devs want people to do or care about pushing people towards.