Ubuntu is owned by Canonical, and they have been making some decisions that a lot of people in the community don't like, most notably, the enforcement of snaps (in a nutshell, the repos are proprietary and centralised), but they have been involved in various other corpo shenanigans as well

But I don't think "X distro is bad, don't use it" is very useful unless it is dangerous or harmful to the user.

Ubuntu (or the various other buntus) work for some people, and without them, far fewer people would use Linux. The benefit of Linux is the amount of choice you get and being able to easily switch between distros (you can even dual boot if you want!)

So if you like Mint, stick with that. If somebody prefers the buntus, it's great as long as they are respectful to others!

Distro wars are stupid

It's not really bad. It's just kinda distasteful due to stuff like Snap packages and Canonical's position of privacy as a company. But it isn't really a bad distro if you ignore that stuff. If it works it works.

Ubuntu kinda forces you to use snap (which sucks), and is owned by Canonical.

Neither of them apply to Linux Mint, so nice choice.