A single Kang, a King Kang if you will (I'll get my coat) who'd defeated all the other Kangs would have been a better way to go for sure. He Who Remains did seem to imply he was one of the nice ones, or at least one of the sane ones.
I might be misremembering this but I thought that the He who remains was the only Kang because he had forced the single timeline and had thus defeated the other Kangs? Their timelines all spring back into existence (and to them they had always existed) when he died?
This might be picked up in Loki season 2 but the first two episodes were so boring I stopped watching.