Eh, you'd want something like this to run something custom, because there's going to be a lot of iteration and it'll be harder to push things through a distribution they don't control.

It seems to be Debian based and has some customizations to make work w/ Android apps nicer (Halium support).

I would personally prefer PostmarketOS, but I'd be fine w/ that being a community effort as long as Furilabs doesn't block installing alternatives.