I call this the "Rothification trap." If everything we have in early retirement is Roth, that's probably not a good answer. There are other reasons we wanna avoid that: standard deduction, maybe we do qualified charitable distributions (QCD) for our charitable giving in our seventies and the eighties.
We don't want every last dollar in Roth. And I worry that SECURE 2.0 is setting the "Rothification trap" for some in the FIRE movement.