I basically run this setup, Synology nas for storage and a nuc12 for proxmox. Things like pihole I run on both for HA. You will also have a much better experience using Plex on an Intel NUC with quick assist.
As mentioned above the helper scripts will save you a ton of time. You should definitely check them out. Proxmox allows you to easily backup and restore. So its much easier to tinker and play around without taking down the whole network.
Not to say I'm not annoyed and they definitely should not be doing this except for their enterprise line. Would I buy another Synology again, no definitely not.
However most "consumers" buying a NAS are already pretty tech savvy. When this issue happened to me I googled it and found and applied the script in 15 or so minutes. Run the script essentially once a year or so when major updates come along. Hasn't been a huge issue. The issue will be if /when they block this script or other fixes.