That's a static page with underlined text that are not links. Does anything interactive start after "Login With Google" (that I won't press) ? Anyway, my point is that they should have presented the transcript of at least one round of the process and demonstrate the improvement it produces. It's much less time consuming for a reader that does not want to invest hours in videos or actually taking part of the experiment. On the other side, those readers might not be of interest to the authors so this is a way to let them go.