I would still maintain that only because you're an expert you don't have superhuman abilities of controlling your attention/boredom.

You say we can't absolve the experts from responsibility here, but it appears you want to absolve the presenters of any kind of responsibility.

Why do these experts need superhuman focus abilities while the presenters needn't even have the presentation skills of 8th graders?

But in the end we should maybe change the format of conveying information completely, whoever is to blame here.