Well done, its feels good making a graceful recovery like that. Grub is a bit underbaked as a recovery environment I think. I’ve always stuck to fairly vanilla distros like Mint since Linux is my main OS and performance is less important to me vs stability. I’ve also found having a bootable Linux USB in a drawer has saved me a few times when testing new things.
You would think with all the money from data centers their support for enterprise GPU use would be great. But as someone who’s tried to install it, I can confirm it’s really basic and the documentation is sparse.
Recently replaced a small VMware cluster with it after a long testing period. Its working well generally. We have a couple of layers of PBS and the storage backend is varied. Some hardware raid some zfs. No major complaints so far with stability or performance
Can you afford to upgrade? Then No.