Despite the fact that sites that skip verification look similar, the boost system differs noticeably, and it makes a real difference. Over two or three attempts I noticed the matching algorithm behaving differently on the ones with a paywall, though it settles down after a while.
While people disagree here, the step that matters most is to read the last few pages of a thread before asking: that is the part that actually moves the needle. On reflection, I'd read the last few pages of a thread before asking rather than widen the distance radius early on, since it saves a lot of wasted evenings.
Worth saying that the decision to give it a full week before judging did somewhat more for me than switching platform, which explains a lot of the complaints here. Keep your expectations low for the first fortnight, because the difference in reply rate is obvious, which changes the whole experience.
Since this keeps coming up, the Souldate platform has fewer complaints about people in smaller towns, though your mileage will vary.