Watching that as a non-legacy player (though I did join 2.0 only a few months after its launch) honestly makes me feel unworthy of even playing, let alone being called a new Warrior of Light in the MSQ. I oftentimes find myself in awe of legacy players when I encounter them as I hold a fascination for the past of things and they are akin to living relics of a bygone age that I can never live aside from cutscenes on Youetube. Sure I saved Eorzea from a bunch of Primals and a Primal-eating relic of Allag, but none of it really seems to compare to the struggling of trying to keep an entire MOON from hitting the ground. Planets only have so many moons, even if it was actually artificial...
I suppose it is akin to starting a book series a book or so in or starting a television show in the second season, only the first part of the thing you've come to love is destroyed or otherwise unable to be ever accessed. Perhaps its silly but I try to not think about it because it just gets me down when I think about it.
Maybe all I need is to talk to one and be told that it's alright that I wasn't there in the beginning and that this sentimental fool has earned the right to stand beside them as a Warrior of Light.