Upgrade Turnkey Appliance or migrate to Debian?

Long story short, I've run Nextcloud on Ubuntu Server, but when I switched to Proxmox, I used the Turnkey ISO for Nextcloud. It looks like Turnkey doesn't have a "simple" way to update the Debian base of the appliance, but you have to do a fresh install and migrate.

I'm interested to get input from others about whether I should stick with Turnkey or just switch to Debian with a LAMP stack and Nextcloud installed on it. I liked Turnkey's simplicity for setting up, but now I'm a little annoyed I can't run a dist-upgrade to go from Bookworm to Trixie.