If there is a sidewalk and cycling path, then in most countries, the road is very specifically for motor vehicles.

100% wrong. Roads are for everyone. Just because you are in a vehicle you can use as a weapon shouldn't allow you to threaten other road users out of their road.

Just wait patiently and drive at the speed of traffic.

If there is a cycle path (meeting certain conditions), then using it is generally mandatory in at least Belgium, Germany, Switzerland, Italy. In Spain, Netherlands and France, some are mandatory and some are not, depends on the form of signage.

Yeah and even if it would be strictly according to the rules, it would still be rude and completely against common sense, same thing then to walk in the middle of the road even though there's a sidewalk "the road is for everyone"

Some people use bus!