Now, I’m on my phone so I can’t write that much but I’ll say that the post I liked to isn’t about potential issue, it goes over specific situations where it failed, ZFS, OVPN, etc. but I won’t obviously provide anyone with crash logs and kernel panics.
About ESXi: Incus provides you with a CLI and Web interface to create, manage, migrate VMs. It also provides basic clustering features. It isn’t as feature complete as ESXi but it gets the job done for most people who just want a couple of VMs. At the end of the day it is more inline with what Proxmox than what ESXi offers BUT it’s effectively free so it won’t hold important updates from users running on free licenses.
If you list what you really need in terms of features I can point you into documentation or give my opinion how how they compare and what to expect.