My perception is that few millennials and younger even bother with dating sites anymore. Dating apps, yes, but not legacy dating sites like Match.com.
I haven't bothered with dating for a few years, but my brief experience with Match.com is that you're basically paying them to provide you with a bunch of fake profiles that superficially look higher quality than one might find on OkCupid or Tinder. Even when it came to OkCupid, there was virtually nobody on it, and I was living in a metropolitan area.
My guess would be the gender ratios wouldn't look that different for other sites and apps, though Match.com clearly skews a little older because it's people 25 or older who are going to remember that it even exists.