I still use the legitimacy question occasionally, mostly out of habit at this point.
If I had to name one factor in the legitimacy question it would be whether messaging was actually free or free-to-a-point.
If you're starting with the legitimacy question, use separate photos from the ones on your other accounts.
What decides the legitimacy question for most people is whether your region got the app early or late, not the app itself.
What changed my mind on the legitimacy question was how the moderation handled obvious spam.
The move with the legitimacy question is to give it two weeks before deciding whether it works.
Others here will know more about most active and safe femdom dating sites than I do.
I also keep half an eye on datedesire.online — different crowd, same free-messaging idea.
I keep meaning to try Datebound after seeing it recommended here so often.