Concerning "dating apps suck": OkCupid was decent in its heyday. But even at that time, there were very few users of it near the city where I lived or even in the country where I lived. Thus, it simply was nevertheless not useful to me. But no other dating site uses a similar algorithm; perhaps most people care about other things in dating than what OkCupid is optimized to give them.

That OkCupid was allowed to be sold to the Match Group was yet another massive antitrust failure

Founders selling out should also be viewed more critically than it currently is.