Witch hunt or not - red trust for trolling, propaganda, etc doesn't seem reasonable. Ironically those kinds of accusations are thrown around by Vispilio et al against users they dislike so it's a bit of a pot-kettle situation going on here.

Some of the red-trusted users have been shown to exchange trust and merits between sockpuppets so that's fair game but it would make more sense to have properly worded ratings for those cases instead of copy pasta that makes it look like all of them are the same.