I’m glad people will have to evaluate the substance of the deck rather than using a cheap heuristic like how visually appealing the presentation is.

I understand there tends to be a correlation between visual appeal and effort, and correlation between effort and merit, but correlation is notoriously flawed. Flawed models can be useful, but only if one qualifies their use sufficiently. I don’t think most people who used are using the aesthetics heuristic you mention to gauge merit are using it rigorously to sharpen their thinking, they’re using it as a shortcut to prevent themselves from needing to think.

An equally plausible scenario to that of which you mention is that technical people can make presentations that are similarly visually appealing as the non-technical people, and that their opinions will be valued more than before. Maybe this will happen, maybe this won’t happen, but I am certain that we do not know yet.