I don’t understand what you mean by “epic pile of hacks”. Proxmox is just a Linux distribution, with a particular focus. All the software is the usual stuff with integration scripts and binaries and a webby front end. They start off with stock Debian and work up from there which is the way many distros work.
I’m not sure what Proxmox switching to Incus would really mean. They are both Linux distributions that focus on providing a VM and container wrangling system.
I happen to be porting rather a lot of VMware to Proxmox. My little company has a lot of VMware customers and I am rather busy moving them over. I picked Proxmox (Hyper-V? No thanks) about 18 months ago when the Broadcom thing came about and did my own home system first and then rather a lot of testing. I then sold the idea to the rest of my company and we made some plans and are now carrying those plan out.
Now, if Proxmox becomes toxic, I still have projects like Incus to fall back on. I … WE … have choice, and that is important. You can be sure that if Proxmox drops the ball, Veeam will suddenly support Incus or whatever the world decides is the next best thing in Linux VMs and container land.
I was a VMware consultant for 25 odd years. No longer (well I am still but only under mild protest!) I also have to wrangle a few Hyper-V clusters too. All of these bloody monolithic monstrosities work at the whim of massive corporations who really don’t have your best interests at heart. They bleed you dry.
I like to have choice. Proxmox and Incus are both examples of choice. You start off with "I’d like to run VMs and containers on my hardware with software that is “open” and you have more than one option. You do not start off with: “I’d like a HyperV or VMware”, nail your colours to the mast and live in a rather rubbish monoculture.
Sorry, I seem to have gone on a bit 8)
It’s always good to have choice.
I’m not sure what better MS compatibility really means. I’ve been using MS software since before Excel, Word etc even existed and taught a lot of people how spreadsheets, word processors, databases, DTP and the rest work in a former life (do you know what a decimal tab stop is, or how to control leading and kerning?)
I generate, by far, the most complicated documents within my company and I have been using LO since way before before it forked from OO. All software has bugs and peccadilloes.
As I said: it’s good to have choice.