I think this is both true and not true. A suspicion I have (and I'm sure there's got to be research on this) is that a lot of people interested in casual dating/hooking up on Tinder and/or in bars are unconsciously looking for a long term mate. In some ways this is a very effective strategy, since you're cycling through a large number of potential mates to find one who meets some kind of acceptability threshold. I read somewhere (sorry can't find the reference), that extroverted, high frequency daters ended up in happier long term relationships simply because they had more selection, which on the face of it seems to make sense.