The main difference I see between bikes/pedestrians and cars/motorcycles is that there is minimal cost/effort to reverse and change your mind. So, on a bike or on foot, you can jaywalk or run a red light by slowly peeking out and making sure it's safe. If someone with the right of way is coming, you can simple stop and let them by. You absolutely can't do that with a car or motorcycle.

My general rule, as both biker and pedestrian, is to not get in the way of others who have the right of way. They shouldn't have to change course or worry about you. Most pedestrians (and plenty bikers too) are absolutely clueluess though. They don't look for bike lanes, they walk in the bikelanes, they jaywalk without looking if a bike (or car) is coming, they open car doors without looking, etc. I think this frustrates a lot of bikers, so they end up not caring and trying to ride through a crosswalk full of pedestrians and doing other asshole things, but I don't think that's the norm.

As a reasonable adult, I know I shouldn't jaywalk or run a red light because they are rules, but I have confidence via my senses that I can do that with absolute safety and respect for myself and others.