This is my wife's experience this afternoon.
Had a lovely walk in the pentlands with the family. Only yelled at one mountain biker who flew through a stream soaking everyone crossing, thankfully the kids missed the shower. Unfortunately the neanderthal thought it was all hilarious and his "Apology" was decidedly questionable. All the others we encountered were nice and considerate /friendly, such a shame one spoils the reputation of other.
Whoever it was should be ashamed of themselves.