Hi,
If you think it's true ... it's your opinion ... but in fact ... it's false ...
but think what you want ... and dream .. it's a good solution to be happy.

I have work a lot with Docker, LXC and namespace ... and write some cookbook on it ... even I am not an expert like you ... I have some little idea about it ... but nobody have the true ... so for me the discussion is closed ... everybody can choice to be a consumer without knowledge or a customer ... it's free ...
In all case, the problem is closed I suppress all my delivery ... so Docker is alone and the best choice (where you are alone you are always the best)
Philippe.
NB APKG even native don't need to be attached to Asustor libraries delivery (exactly as container ... but not hidden and with just in time update) and Docker is built first to sale services but ... use free software as catch.