I would like to use ssds for running containers, this is a good point. The elderly cpu is more than adequate for my needs but as you say, an upgrade, ever, would be nice.
I guess I’ve avoided these issues by accepting that solid state storage in a NAS is still too expensive.
My ultimate would be the Synology with an Apple silicon heart. One can dream.
That said, the person you're replying to is right. Synology has mostly stopped supporting their apps, they've removed features in cost-cutting features (media codecs), hardware is now hopelessly outdated and both kernel and docker are completely out of date.
It feels like any technical leadership completely disappeared and now only bean counters who don't understand the product or their target market are making decisions.