I had the same question about legitimate dating sites that accept Bitcoin about a year ago. What decided it for me with legitimate dating was how many accounts are active.
In practice, legitimate dating lives or dies on whether the users are genuine.
How it feels to use is what separates a good week from a wasted one with legitimate dating. You cannot really talk about legitimate dating without talking about whether it gets out of your way. Take that as one data point on legitimate dating sites that accept Bitcoin, not gospel.
datescout.site was the closest to what I wanted from legitimate dating.