Size of software repository and size of development team. Simple as that.
Too small for you? While I've tried a number of other distros, I can't say I've really had any perspective on what might be large versus small- even inadequate. Though I have spent some time with Ubuntu and didn't appreciate some of how their repository operated with my older computer.
Probably the best reason I continue to stick with Mint is that the applications they provide "out-of-the-box" seem optimal not only for a casual user, but also for someone with more technical experience, wanting to optimally maintain the OS. While I enjoy Pop!OS22.04, this is where Mint outshines it in terms of software offered or installed.
But then up to now I run only four minor games on it, directly from Mint's repository. I know if one is into gaming, they're probably going to want to tap into many repositories, and never rely on any single one. The games offered in Mint will put most folks to sleep.
I've never given much thought to their development team, but rather that they are in their 19th year and that they continue to produce LTS versions of their product, which is also a priority for me. But then also I still consider myself a noob to Linux even after two years...and I can understand your perspective being more defined compared to mine. Mint remains an excellent distro to use coming directly from Windows, but seems seldom a preferred distro for more advanced users.
My one major criticism of Mint? Less customization possibilities. But that seems deliberate on the part of Mint, in an effort to keep quality control consistent. While you can alter it to use Gnome, it isn't advisable and can produce some unwanted circumstances. Though there are a few things one can do with Cinnamon as opposed to Gnome.
Some day I would like to give an Arch distro another shot with my latest computer, just to see if I can finally make it all work. But I'm not in any hurry to find out...lol.
