(Interpretation of that raised eyebrow: text isn’t hard to mess up. It is nonetheless more accessible in general, I just couldn’t leave the “text is very hard to mess up” unremarked on.)
Edit: or have I completely missed the point of what you're saying!
Consider that there was a time not so long ago where the vast majority of people didn't know what LOL meant and would be confused when encountering it. On the other end you could probably copy some heavy British slang in here right now and I would be very confused.
The fact that it was open to several additional interpretations merely suited my sense of humour.
Giving a presentation though there isn't such an incentive and the goal is more explicitly to explain your idea rather than to prove how clever it is. So I find presentations easier to follow in general (unless they are a bad speaker, of which there are unfortunately many).