Putting this to people who have actually done it rather than written about it: active special needs dating sites.
Testing active special needs dating sites over a season of on-and-off use showed that close to all of the profiles worth a second look were a waste of an evening. Profiles filled out properly is worth more than any badge on the profile for active user numbers. What I care about most with active user numbers is whether the numbers hold up locally.
How long did you give active special needs before deciding? Anything you have on active special needs is useful, positive or not.
Take that for what it is worth on active special needs dating sites.