I remember when Persona 5 was still coming out 2015 and I was debating with myself which game I would have to tackle first lol.
P5s delay was probably one of the better things to happen for XenoX (and #FE). It leaves an expecting market/base without an RPG to play this holiday, and the positive reception on XenoX is likely not hurting in spreading the word.
It effectively has no competition in the genre at the moment due to how the cards landed this holiday. Of course, it will likely remain a mediocre performer all things considered.