"The findings also suggest that a more challenging interview increases the probability of accepting the job offer by 2.6 percent."

This strikes me as a dangerous and potentially incorrect statement. Does the challenging interview increase the probability of acceptance or is it associated with companies that are growing/popular/frontrunners and therefore a first choice for applicants? Is it a statistically significant difference? Is it simply correlated?

I say this because these statements are not in a vacuum. For software development, which is the only industry I can speak to, many interviews are already ridiculous in length and number of rounds. Some HR at a decent company is going to look at this and say "Well, guess we should make our interviews more burdensome".

Also, I just noticed... this survey is from November 2020. That seems like it would be important or at least notable. Though I may be in the minority on that.