Notice how it says BONUS items? The idea is that you already know you're purchasing a ticket to the stream, and that they're giving you these a bonus. If they advertised it in the reverse order Glam/Minions -> Stream pass I'd understand your point. Also note that they don't say anything on the lines of "They'll be gone for good!" or anything on those lines. You're just putting words into their mouth to make it seem like they would never be obtained by anyone ever again. The moment the moogle outfit came to the mogstation or hell when those tidus/yuna costumes hit the Mogstation a month or so ago you should know that there was no one off for them.
Okay so even if you couldn't purchase them from the salvager and lets give the example that someone bought all three streams to get all of the minions . You'd have enough for three sets all together. Three sets of items that can be stored in an armoire forever, that give you explicit notice the item cannot be reobtained if you discard them. On top of the one time recovery you might as well have them on your person forever at that rate since the steps someone would go to delete them would be pretty steep.
Would you be able to point out to me where does it say you can ONLY get them through this promotion? I can clearly see it says last chance to get these bonus items but does it say but where does it say the word "Only"? Yeah it's the last time you can get them with purchasing the stream as a bonus but it doesn't say anything about them only being obtainable through this event.
The point I was trying to make is if I wanted to focus on just the minions/glam (which seems to be your main point) I could have absolutely just stayed home and purchased them as they came on the mogstation. Instead I used my ticket to take advantage of everything it had to offer as the mount/minion are just part of it. You didn't seem to talk about everything else that came with your pass, all of the benefits you got for purchasing it and instead harped over the bonus item you got because you assumed it would only be obtainable through the pass. You didn't purchase the "FFX Glamour/Minions + Bonus Fanfest Stream" promotion you purchased the "Fanfest Stream + Bonus Glamour/Minions" promotion. You're selling yourself short mate if you believe the glamour/minions legit make up the high price.