I don't think this informal study presents as strong of an argument as you may think it does. As the author themselves admitted, seniority was strongly correlated with rate of interruption, but they didn't control for that in their overall gender comparison. The top three out of four interrupters were women. As it turns out, that particular set of people had a lower number of women in positions of seniority. Is that not a plausible explanation, or at least a confounding factor that you would like to eliminate, before you declare that men interrupt x3 as much?