Why are you asking him? He isn't defending it, he just pointed it out.

Are you having a laugh?

Soz, I should explain: Allow a speech about something a bit of leeway but if the source is bollocks, then call it out as such.

Science is a thing. The scientific method is a thing. A speech at an event can be a bit wayward and take liberties but the original, quoted, research should be sound.

Is it?

Scientists are just people who slept through a few more lectures than the rest of us. Of course they can be full of shit occasionally.

A big question mark is that they talk about it in the video but the study was apparently never published? (See other comments, below.)