So for about two years, I was there, on OKC as sooooo many brand new people discovered it, in a huge city, in my mid-twenties. It was an incredible time. I met so, so many interesting people, who were so similar to me. I couldn't believe it. It was all free, too.
No lasting relationships ever came from it. I met my partner of 10 years at work eventually.
I've never been on Tinder or any other online dating platform, but it sounds like the industry (it is now an industry...) has gone through the same cycle of VC-driven monetisation, removing all incentive for the platform to function correctly in the user's interest, much like any big platform nowadays.
So, I guess we'll need some kind of online dating fediverse to fix this. I'd recommend copying exactly how OKC worked. It was the best approach I've ever seen. But also the only one ;)