It's anecdotal but this happened to me several times. You also hit a bunch of profiles that are clearly promoting similar services.
I'm sure it's not great for women either, but dating apps in modern times are pretty awful for men.
On one hand, you have normal porn... with some google-fu (well... bing-fu) and disregard for copyrights, you can find anything you want for free, but you have to jerk off by yourself.
On the other side, you have prostitution, where you pay, and you get actual sex (bj, hj, pegging, whatever you're into and pay for).
And then you have onlyfans... you pay... and then you have to do the deed yourself? why?!
Then there's those that live in countries where prostitution is illegal. How does someone that's socially awkward and has no network to speak of, look for and hire someone working in a profession that's outside the law?
On the other hand there's a degree of protection for both sides when the only insights to the other is just a small block of text that flashes on a screen. It's hard to be a disappointment when you're just a box that's garnered 15 seconds of paid for attention.