I think the short answer there is a yes but the qualified answer is “it might be harder or have a gotcha”

I’ve used a few tutorials from here and they are usually on-point when up-to-date as this one is. They actually have walkthroughs on doing docker installs so I can only imagine the reason here is something to do with how they wanted set things up that made the container manager too much.

We are dealing with a setup where the general public will be hitting your NAS, this may be a way to secure things but I’m only guessing. We could try reaching out.