I'm running kubuntu on your same 2012 MBP. Runs great, but I've considered going pure Debian too, maybe still with KDE Plasma. You look happy; cool background!
Yeah, except one thing which is that my microphone is not working and I had to join from my smartphones for meetings. One night I had my laptop running overnight with charger plugged in and the next morning it was dead. Went to a technician he revived the machine but since then microphone is not working. Even if i plug external mic through 3mm jack it also not works. I am usually busy so can't afford to go back to that technician's shop to get it fixed again. So i am living with this for now. And there are no other shops nearby.
Rest is all good!
And yeah for future viewer, whenever you install a distro on MBP 2012 no matter what it is (fedora, opensuse, mint) you have to install wifi drivers manually and you might need ethernet or USB tethering to do this.