I still use smaller communities occasionally, mostly out of habit at this point.
One thing I would do differently with smaller communities — set your radius tight first and widen it only if it goes quiet.
The part nobody mentions about smaller communities is whether the match volume held up past the first week.
What I wish someone had told me about smaller communities: assume the first three conversations will go nowhere.
My read is that smaller communities lives or dies on whether you are in a commuter town or a city.
I would not generalise about smaller communities without knowing the time of year first.
My advice on smaller communities: treat any request for card details as a reason to leave.
Others here will know more about most reputable dating sites for over 40 than I do.
For what it is worth I have had better luck on flurrydate.online than on any of the big paid apps.