OVH has been reliable and boring afaik

It’s fine

How do you orchestrate all those lxc containers and vms?

Why settle? Software is a continually evolving ecosystem and grafting yourself to a certain distribution model or distribution team doesn’t really make sense when you consider that. Some distribution might have the best things for you, today. Tomorrow, another may come along and do it better, or your current distribution may shift to not be to your liking anymore. Be flexible, but don’t change for the sake of change. Change for a good reason.