It felt like Pop_OS! went out of their way to rewrite the own custom installers and then just decided not to support btrfs for whatever opinionated reason? I dunno - but it made me rather unhappy with the situation and I switched back to my Ubuntu Budgie distro of choice. Sad - because I would have dog fooded Kinto.sh seriously on Pop_OS! had they supported btrfs properly w/ snapshot support. Most Ubuntu based distros don't change the installer so much that proper btrfs support is broken.
I do support them though and may purchase one of their laptops in the future and sure - I would love to work for System76 - despite not yet using their OS on anything besides a VM. I do think they get a lot right, and love that they open sourced their BIOS for their laptops. We need more companies like them selling Linux pre-installed.
I tried kinto on Pop about a year ago and it worked pretty well but conflicted with their workspace and tiling key commands so never tried switching to it beyond a single days worth of preview.