My interpretation (because I can't quite tell what you're saying): If a 30 year old cube doesn't have any washers and has had 43 Quintillion solves done to it, and there aren't any side effects, then maybe washers don't matter.
My response: That's because this 30 year old cube (which by the way, couldn't have possibly had 43 Quintillion solves done to it) was designed not to have washers, unlike his cube, which was made to have washers. I'm not saying you're wrong, I'm just saying your reasoning is flawed.