I’m running Nextcloud from a Turnkey LXC template that’s available in Proxmox. Runs solid, I have no complaints for performance or stability. But upgrades are manual and very involved. It’s not too complicated, but there is always something that needs extra attention or troubleshooting. I also wasn’t able to figure out Turnkey migration toolset that they suggest to use for major upgrades, such as to new version of OS.
The article says they replaced them with remote workers in India, I’m assuming with even lower wages