@youronlyone I feel like Ubuntu is now a "base distro derived from Debian", mainly because "base distro based on Debian" sounds weird :laugh:
I feel like it stopped being a "flavor" when the project got so large and started to push in a different ideological direction. The recent controversy over Snaps also reinforces that Ubuntu has done much more than just customize a DE and select certain packages, Canonical wants it to approach Linux management in a very specific way.
This leaves room for Kubuntu, Edubuntu, etc to be flavors of Ubuntu, which they certainly are.
But, this is all splitting hairs. Any interpretation is correct if the user understands it! :linux: