The slow speed roll through a stop sign from cyclists on road bikes frequently comes because they're using pedals that physically attach their shoes to the bike, and they want to avoid the dread zero speed fallover crash you get if you go to a dead stop and then can't get unclipped shoes in time to get a foot down.
Just to explain the logic there, and not to excuse it.
Well that does not sound very safe, what happens if they need to stop, for say a person in the cross walk.