For me it was tinder. Before tinder came out I was 5/10 and could date other 5/10s quite easily. Now I have to fight 100 other guys to fuck a 2/10 once before she ghosts me. In the past 6 years I've gotten fitter and richer but the women I can pull keep going down in quality.

I estimate that tinder has adjusted male /10 scores downwards by at least 3 points. The juice isn't worth the squeeze anymore if you're not chad.