One of my fav tech talks ever (and I watch a lot of tech talks) is Alan Kay's "Is it really 'complex'? Or, did we just make it 'complicated'?" It addresses your question directly, but at a very, very high level. https://m.youtube.com/watch?v=ubaX1Smg6pY Note that the laptop he is presenting on is not running Linux/Windows/OSX and that the presentation software he is using is not OoO/PowerPoint/Keynote. Instead, it is…
Alan just complicated his own laptop by not using which is proven to work.
The whole vertical software stack sitting on top of the hardware of a PC is generally considered a massive towering best with layers of abstractions, and armies of programmers needed to implement and maintain each layer. To say that this does not need to be so, would be taken as theoretical, impractical nonsense without any proof. Which actually would be a valid position, because doing software is so hard that generally you can't guarantee will something work without actually doing it.
So, yes, to make that point, and to have it taken seriously, he really needed such an example.