Dating apps favour the top 20% of men, and the top 50% of women. The data says as much. I do think there is a 'cliff' where the amount of responses you get drop at a certain point - whether from height, income level, whatever. In real life it's much more nuanced than that because people sort themselves out gradually and not as much from limited statistics or even just visuals.
The issue for men (and to a lesser extent, women) at the bottom of that cliff is that online dating has the possibility to demoralise the person into not doing actual physical dating. I do think we are entering a period where a significant chunk of the population is going to finish life having never had a real life partner.