This mouse deserves its own category of "super mouse" because buttonless mice can't compare to this.

I haven't played any MOBA or MMO games recently but this mouse is still extremely convenient to have for many games and applications. It significantly reduces the amount of cross-country travelling your hands have to do to perform common tasks.

For instance, any game with a hotbar of items or abilities can benefit. Your left hand can stay on WASD & shift/control while you use your thumb on your right hand to swap to a different item.

Web browsing: Switch tabs, page up & down, go forward & backwards, close tab, copy & paste, middle mouse (open new tab), volume up & down. That's 12 actions you can perform using your thumb alone, without touching the keyboard.
Programming: With any modern IDE you can certainly find many uses for 12 side buttons. Excellent for navigating & refactoring code.

The mouse is very light & comfortable and it also works on Linux via ckb-next.

10/10, would buy again.

From a purely constructive point of view:

1. High quality mouse.
2. Good shape and sits well in my hand.
3. On the side buttons, the number 1 key sits quite low which causes your thumb to press against your mouse pad when pressing it, which is a bit of a down side.

Overall, i would recommend this mouse for any moba/mmo players.