I thought it was pretty obvious (as well as stated multiple times) that leeching causes an increased matching time.
Back in my day, you would get a game on chess.com immediately, every single time, 24/7.
Nowadays, while this is still mostly true, I sometimes have to wait upwards of 5 minutes to get matched for a 5 minute game. As leeching becomes more widespread and encouraged by the community, this will only get worse.

Hmm. This is giving me an idea, Leechers_R_Us group. What do y'all think?
drop an 'e' in the name and more will join
+1 We need a lechers group