So they were a keynote speaker and yet noone in the conference team looked at the slides before the keynote or someone did look at the slides and did not see a

So they were a keynote speaker and yet noone in the conference team looked at the slides before the keynote or someone did look at the slides and did not see a problem. What that indicates to me first and foremost is that this is a poorly organized conference. I would expect that every single speaker is asked for at least a draft of their slides a few weeks before the presentation. Either ignoring the keynote speaker or not supporting them in such a bizarre case speaks volumes about the organizers. They simply don't seem to care about the content of the conference that much.