There’s nothing wrong with Strava, it’s a great tool, and I think if used with courtesy really adds to the challenge of riding places like Llandegla, it’s idiots forgetting that they are not on a marshalled downhill track or closed road that is the issue, i.e. “STRAVA RUN!!!!” cocks.
I reckon having closed groups on there would be a good idea, then friends can compete on sections without inviting the world to join in, we’ve got a looming problem locally with pissed off non-riders moaning about people riding “illegally”, god help us if they ever discover Strava, so much so that my rides are now private.