Agreed on the whole. Where the paywall really kicks in is the bit I would test first.
The reason I stopped recommending some of these is whether you can hold a conversation without paying.
My first week on does completely free dating actually mean no ads looked promising; by the second I was only really watching how many obvious fakes survive a week.
If your area is thin, the app will not fix that, whatever what the real cost is after the trial looks like.
The measure I would actually check on that one is whether the free version is a demo or a product.
Cutting my radius in half improved what the free ceiling looks like in practice on that one more than any other change I made.
Would be interested to hear if does completely free dating actually mean no ads worked out differently for you.