It's pretty clear here then OP is referring to the people on stage with them. They all gave a presentation and are, likely, experts on their topics.
Having said that, there is a chance those people are using AI due to impostor syndrome or something similar. Given that OP was implying most of them were using AI to form their answers, it's unlikely this holds for all of them.
https://lobste.rs/c/jzi2tm
