With fewer dates you are more invested in the individual relationships. This is the opposite of something like OK Cupid where you may message 100 people and only get a few replies.
Well it's about efficiency too, Coffee Meets Bagel does the 1 day a match thing and after 4 weeks of non matches (either I wasn't attracted to them or they to me) I just quit the site. Compared to a minute spent swiping 30 people on Tinder, or a minute or two reading someone's profile on OKC.