Well for example, if we compare to OpenShift or OpenStack they are huge projects kind a working on a different approach to the same problem PVE is.
They don't work on the same problem at all. Different approach is e.g. k8s. It's scalable approach which PVE is not.
In my point of view some things like Multi Cluster integration and HA between Geo locations can be done with K8S for example, but then everything comes as a performance problem with VMs and etc. Then why to even use PVE? Why not just a Pure K8S batemetal?
Precisely because PVE is for the small-scale. For those that build large scale will do k8s bare metal. That is, if your architecture is k8s ready.
BTW if you check the latest feature request in this regard (multi geo location) is something requested 5 to 6 years ago. It has been a long time ago And people are still working in a beta release
Because it does not suit well at all the original philosophy which became a baggage. Every other solution has some sort of monitor node, except PVE wanted to make the nodes equal, relay to each other, etc. Then the limitation to realistic number of nodes per cluster. And pretend it's "multi-geo location" when it will in reality be multi-cluster single control plane (and relaying). It scales badly and it becomes like all the other solutions (which have an advantage with the more traditional architecture).
I will leave the rest ... I guess it was for @Tekuno-Kage to react on. But the community is not the steering committee. In fact, I did not even see any sort of statement on governance from Proxmox. So the forum is like pitching playground. The developer mailing list looks like overprotective parenting group at times. Nothing too radical, as in ... not the slightest even.