I probably have, but 'forum user decries the death of the game for making content that isn't tailor-made for them in particular in all of content, difficulty and aesthetic' isn't especially memorable or noteworthy so I'm always a bit surprised when anyone actually recognizes a name on here.
It is a bit weird they're returning to it instead of doing something from another Endwalker culture, but with the original 90 maps being a Loporrit creation and the new ones being Elpis-based in addition to the raid tier taking place there i don't especially blame them for going back to a pre-existing plot hook.
If one thing IS weird about it, it's that it only seems to require completion of palace of the dead to floor 50, meaning that you don't even need to beat heaven on high's 30 story to find out that that had something to do with the Allagans as well.
