hmm…
initially I thought the complaint about the dotted line was when 2 bikes are sharing a lane, or when someone isn’t riding in the middle of the lane.
I never ride in the middle of a lane due to all of the shit that accumulates there. Follow the path of the tires in front of you and the debris will go to the sides. Also at night I like my headlight to shine past the car in front of me so that when someone is waiting to make a left, they see me behind the car in front of me.