I don't think that bicyclists boycotting a ban on bicyclists is going to have much effect.
Obviously, the bicyclists weren't welcome to begin with; voluntarily absenting themselves is strong proof that the law instituting the ban was effective.
Boycotts make much more sense when the boycottee (so to speak) experiences some discomfort by the (in)actions of the boycotters.
Boycotting a town which has already banned you isn't all that effective of a strategy. It simply affirms the success of the ban.
That is friggin hilarious. They think a boycott will change anything. LOL