That wouldn't shock me lol, but I mean 1) you never know 2) I'm sort of used to media where there are multiple creators who don't always communicate or have any clear plan in mind. The FFXIV team actually has talent compared to some other people I've seen. My sense is that unlike the other medium where you kind of need to run with death of the author/throw original intent out to take the work in isolation, FFXIV team basically laid established bones in ARR that can be fleshed out retroactively. So while the Amaurot backstory stuff got established later for us as players, chronologically in-game it would have been true throughout and as long as there isn't direct contradiction it should be informing what goes on.
Kind of a process of building characters through the happy accidents that work with later lore, if that makes sense.
People have mentioned he's a master body snatcher, and technically speaking if he comes back my theory is that his aether has probably been corrupted to high heaven. Aether/soul might or might not be partially consumed, but teeeeechnically speaking I think there's a decent chance he's hitched a ride with Zenos via Shinryru but is currently dormant/basically comatose from his misadventures.
If he comes back he's basically "I LIVED BITCH" incarnate.
Idk if you're referring to the kid Amaurotines in Amaurot and the Amaurotines referencing that they think you're a child? If that's the case, tbf they did sacrifice themselves periodically in creation magics and were shown as capable of dying in accidents or violent circumstances. If having kids was done sparingly to replenish numbers might make some sense.
