POF has been dead for years. OKC has also been dead too.
In the late 2000s/early 2010s, they might have been viable. A lot of garbage dates could be arranged from them. "One date, no sex, no second date" type dates if you sent out enough decent messages.
Women never took their OKC and POF prospects seriously during that time.
Swipe apps changed the game. Tinder has a short period where it was good at producing quantity of dates before it went to shiit. Bumble and Hinge too on quantity. Everything is shiit now.
Approaching strangers has always been the better play for putting yourself on quality dates. Better yet, warmer approaching or having a viable social circle. Nothing beats social circle for quality. The downside of social circle is that you have to be more blue pilled to do it in a lot of cases, though a serial monogamist alpha/sigma could do it if he had semi-extended relationships.