thats not true, they nerfed advanced cancer and arguably patched the noobs out like that.
a commander that enforces getting the game to play itself isnt a good commander this is an RTS not a tower defense game that commander never should have been a thing let alone as strong as it was.
While that's true about the nerfs, the noobs who lost to these commanders back then, still are losing to them now.
Noobs are passive and incapable of employing correct counters and target priorities, leading to them losing against literally anything.
Just look at certain players whose name starts with u and ends with u, there is not a single opposing faction unit that would not be insanely overpowered in his eyes.
Reworks can be made and commander can get something that provides utilities for other troops as well, it does not need to directly be buffed, despite both, commander and all emplacements being nerfed to the ground.