Pedestrians are fine, cyclists have to admit they are doing it for their own personal pleasure at the time and expense of everyone else 99% of the time. I commuted by bicycle for many years because I lived somewhere that it was convenient and appropriate. I didn't impede traffic and delay other people.

Cheap motorbikes need to be more widely available and utilized by any one who is cycling out of necessity in areas not intended for it.

Bicycles should absolute be relegated to specialized infrastructure of which we should build more, but cyclists within regular vehicle traffic is mostly done for enjoyment and only inspires hatred and annoyance at bicycles in general which creates a feedback loop resulting in less support for bicycle infrastructure.

Having to slow down traffic and wait to pass a bicycle only to have them filter back to the front at the next red light and make everyone slow down and pass them again repeatedly is a real contributor to gridlock.