It's got nothing to do with leading somewhere productive.. it's when you post an opinion as if it is 100% fact. You're clearly set in your mindset, having a productive discussion is impossible from the start.
If you'd take a few hours and sit down and learn docker rather than just saying it is a "huge step backward", you'd find it is WAY easier to setup and maintain services on your server with docker. I'm glad OMV has moved away from plugins in favor of docker.
If I wanted to learn about docker and other nifty linux stuff, I would not use OMV. I would just use barebone armbian and set up the NAS myself using CLI, no GUI needed.
BUT: I'm using OMV and I actually thought the purpose of OMV is, to make it easier for users to set up a NAS with a lot of nice functionality - without having to be an IT expert.
OMV used to be a lot better than Synaptics or QNAP (I tried both before). But IMHO, that does not hold true anymore - OMV5 strips so much functionality that other NAS solutions are now better. Sorry to say that ...
If you want OMV to be an IT-expert-only system: job well done. But in case OMV actually targets non-IT end users, you should re-think the current strategy ...