I'm confused here. That quote clearly says that Flox makes Nix easier for newcomers, not that Nix is easy. What exactly do you take issue with?
For me, it doesn't simply need to be easier, it needs to be usable. I lack confidence a product which is an abstraction layer is going to solve that for me, because I have a personal inability to understand the underlying system.
For what it's worth, there are a number of options in the Nix space that really do solve for its complexity like Devbox and now Flox.
Thanks for the "advice" though.
I'm in no means claiming Nix is perfect, but coming from other distros to NixOS I really appreciate the ability to reboot to a new generation and then reboot back if I run in to issues. To do the same in Arch I had a bunch of 'snapper plus manual steps' to accomplish the same.