What are technical benefits of having multi-owner pool?

Thanks @tomdx for your awesome answer!

I’m still trying to understand if it is beneficial to create separate artificial-rewards-“owner”?
That account will receive rewards, hold full/partial/none pledge, (maybe do payments too?)

Sorry for asking dumb questions, I’m reading everything about multi-owner pools (my-fav-thread) to understand potential outcomes and operations just before I’m ready to host my pool to mainnet. So people in such threads discuss such “rewards-receiver” owner.

Trying to understand best practices and the most common use-cases.