I do the one in Selkirk and people* are racing even though it isn’t a race.
Still normally people are polite and if they are good enough to ride fast then they are good enough to call out and get past.
As it isn’t officially a race and no one cares if you come in 45th or 46th people should generally relax a little bit. Especially as over that kind of distance a few seconds don’t matter to most.
In any section of society there will be idiots… they might not have realised what they were doing but they should of apologised. Personally though I’d ignore it, life is too short.
*Those around me in the 4h30 time range, can’t speak for those further back and if those in front weren’t racing then I’m very jealous. Made a bit different this year by having a genuine race catoagory for the nationals as well .