Since this got so much attention, I feel the need to add that the CEO of Substack is now saying that even accounting for fake views, their traffic from X has gone up substantially.
Tweet with graph: https://x.com/cjgbest/status/1985852384531394916
Tweet with graph: https://x.com/cjgbest/status/1985852384531394916
"Fix for false impressions going out in the next build"
EDIT: Ah your shared post seems like it accounts for that.