People on bikes may be rude and may not follow the rules, but can’t be aggressive.
When a man with a .45 meets a man with a rifle, the man with a pistol will be a dead man.
Original stripe from the Onion: https://www.theonion.com/bum-rush-hour-1846606314
Cross-posted from: https://mastodon.uno/users/rivoluzioneurbanamobilita/statuses/113615912203015089
Maybe they just want to warn you so you don’t startle when they pass.
Mixed use paths are not great for commuting.
Most sidewalks are not “mixed use”.