In reply to Herdwickmatt:
It's worth looking at some of the FB forums which have moderate to severe moderation and remove a lot of the bumf, especially if race specific (entered or aspirational) as these are the most focused. More generally even within those with good moderation there is always a stream of self-promoting trainers, nutritionalists etc that need to be removed, often appearing in 3-4 forums you might visit which is annoying. However most of them are not discussing the terrors of 5G, politics or COVID19 (except for race cancellations and recovery) and there has been little or no racism observed. I do wish they would discourage the very few people that post every 10k they ever ran! That is what Strava is for!