I mean, cyclists are often very reckless, dangerous people on the road

you should try interacting with cars as a pedestrian or cyclist. There are people driving on the roads now that I wouldn't trust to safely ride in a pram let alone use of heavy machinery at high speed in a public area based on a test they did years ago. If car use was held to the same standard as safely using heavy machinery in an industrial environment a lot of people who drive now wouldn't be let near a car. It's like people think they have a god given right to operate heavy machinery despite having no ability (or inclination) to do so safely and doing it around children

also bikes don't actually have turn signals and when you use your arm to signal it means you have less control of the bike while you do it