Also, it wasn't a given that you were only/primarily using it via a mobile app. I remember frequently browsing OkC and chatting with people on my computer during lunch. It was a lot more focused on saying things before they turned into another swipe/mobile-centric platform.
I just recently saw a documentary excerpt where two women were browsing and discussing profiles on a dating site in the early aughts — there sure seemed to be more info and more engagement with a given profile. Whether that actually led to better outcomes, I don't know, but the difference is pretty big.