You've never heard anybody grumble because they had to wait for or go around somebody parallel parking?

Besides, your argument wasn't that people said "those things shouldn't be permitted in the road" -- it was "why is X acceptable and not Y" when "Y" involved a bicycle. My point was that these things *are* acceptable to most people, and only a small number of people say that they're not -- at least not to the point where they start to do stupid/dangerous/illegal things as a result.

If you really want to know why individual Z feels that X is acceptable and Y isn't, you'll need to ask them. But don't go assuming that most people feel the way your question implies they do -- because most don't, or at least don't feel strongly enough about it to act upon it.