Me thinks this single friend is confusing singles mixers with singles orgies. Probably thinks my friend's shul is a "wretched hive of scum and villainy".
Am I not getting something? Is the shadchan needed to make sure that any unsuitable marriages not take place? To prevent undue mingling? To make sure the shul doesn't keep its' singles to itself and instead share them with the outside world? Huh? People not getting married, bad. People getting married, also bad? What?
I've commented on several posts that a lot of my friends married their girlfriends/boyfriends and did it without the aid of any shadchans. If you want to get married, go do something about it yourself! What makes people think that their mommies and shadchans will find someone for them? The mommies will look for a spouse for their kidult that they themselves will like. While the shadchans' main concern is to move inventory, earn money and keep any damaged goods out of the system.
Want to stay single? Use only the Elders of Zion approved dating method, complain about every potential match and blame the system. Want to get married? Do something about it!