Hadn't heard of their new OS - interesting.
Ive always wanted Synology to license their OS out as their hardware is all low power stuff and useless for virtualisation.
Xpenology[0] may fit your needs. I'm not sure where in the grey area it fits, but it seems to get mentioned in polite company without inviting floods of copyright issues
That Xpenology exists may explain why Synology don't license their OS.
That Xpenology exists may explain why Synology don't license their OS.
[0]:https://xpenology.org/