Out of curiosity, what do you mean by “pain with static linkage”? If my links have broken in NixOS, it was always due to my inability / laziness to set things up correctly.
I have been using NixOS for my daily driver for about a year now, and while it has been a bit of a learning curve to set things up and heavily rewrite my dotfiles, the dependability and availability of packages has been nothing short of amazing. It feels a lot like the final destination for my distro hopping journey.
I use a lot of CLI tools and some system level hackage to get my keybindings just right, so when I tried out Silverblue I had to load in a lot of stuff through rpm-ostree, which was less than ideal. But if OP wants a rock solid system with Flatpak apps, I wholeheartedly second Silverblue.