Your linked video certainly has relevance here.
There is a barrier to entry in regards to creating ideas and bringing them to life on a platform like W3D or Unreal or whatever. The initial steps of entering unknown territory - unknown tools, working environment, standards, and missing knowledge all create a high-pressure situation that most people quickly want to walk out of. This is a perfectly natural human response, most of us don't deal well with such things. The problem originates from stepping into these situations blindly, without assistance, and without support - as you say.
The problem is often compounded by other people sharing these negative experiences, which then creates an echo-chamber within your head which basically serves to reinforce that "this is hard, and everyone else thinks so too". You're left with a wish to create, but no means to pull it off.
So yeah, you put a different light on an old issue. You speak about it from an angle most people don't really consider, but I think it is a good idea that you try to highlight it. It might, as you say, 'unblock' some people into trying something again... Hell, I know several W3D projects are literally begging for more environmental artists, so it's not like the whole 'job' is unwanted!