I'm required to use CentOS for work and it would be an understatement to say how frustrating it is to use for me. So many packages are missing / old, and some packages just break. There have also been wild bugs which just kernel panic the whole OS. I'd steer clear.
If you're on Kinoite, can't you just enable Plasma 6 if you really need it?
https://tim.siosm.fr/blog/2023/11/22/kinoite-plasma-6/
Otherwise:
https://community.kde.org/Plasma/Plasma_6#How_to_use/test_it