I’ve been using Debian on my desktop for five years now so this information might be a bit outdated, but I have recently installed Mint on my server.

In my experience Mint (and Ubuntu) have been more beginner friendly with installation and initial setup. I remember trying to install Debian on my MacBook which just crashed on bootup whereas Ubuntu worked out of the box. Mint draws from Ubuntu’s repositories which are more up to date and has more packages in it. Being able to rely on apt for installing packages has meant an easier user experience. And the last thing is that there’s just more information out there for troubleshooting Mint problems than there is for Debian in my experience.

That’s what I find. I could be wrong about some of the details