That’s no different from VMware or Hyper-V if you switch the specifics around. There are many more administrators running virtualization clusters that have very little knowledge of the internals than there are subject matter experts or weekend deep divers. The barrier to entry for these things is low because they’re designed well enough and half decently documented. Proxmox isn’t unique in this respect.

OK. So we have a disagreement then. What part of Proxmox requires expertise?

I’m not sure I’m parsing your fifth paragraph correctly. Are you suggesting Proxmox is DIY and unsuitable for Production? That Proxmox is suitable for Production and those who think they can roll their own hypervisor are in for a bad time? Something else?