Is there a perfect track record for any which distro? No. Do any two desktop environments ever behave the same? No. Is there anything really good and cool about the MATE offering? Yes, definitely. It's not the finest, but it's definitely quite all right.
You do get very decent hardware support, adequate battery life and good performance, smartphone and media support is top notch, and your applications will all run happily. On the other hand, you will struggle with Samba and Bluetooth, and there are some odd issues here and there. I think the Gnome and Xfce offerings are better, but MATE is not to be dissed as a useless relic. Far from it, this is definitely an option you ought to consider if you're into less-than-mainstream desktops, and you happen to like CentOS. To sum it all up, another goodie in the growing arsenal of CentOS fun facts. Enjoy.