As someone who has used too many distributions and window managers to count (over the course of many years), I've settled on Ubuntu and whatever their default UI. And I quite liked Unity as well after a while.
Of course if there was a major reason to switch away from Ubuntu or their default DE, I would, but it's the pragmatic choice. The constant "finding" of the perfect fit gets in the way of actually doing stuff. Once you adjust expectations towards a system, I'm still far happier with Ubuntu I could ever be with macOS or Windows, and don't waste time having a different system to work with every two weeks (slightly exaggerating).
Is it perfect? No. Is it good enough? Yes. Is it great compared to alternatives (factoring in speed of deployment and productivity from the get to)? Definitely yes.
I'm glad popOS uses Ubuntu and Gnome as backbone and tries to give you a customized experience rather than completely reinventing everything. Though for me, as long as Canonical doesn't screw it up in a major way, stock Ubuntu it is.