Before I start, I want to make clear that i do now know anything about the background of this conflict, And I most certanly am not interested in reading the related community discussion.
That being said, I believe that the statement that there is indeded a path on the south of the building is correct, while simultaneously acknowledging the fact that thare is a more propper path to the north of the building.
Additionally, wanting bikes to be routed over the northern path is completely reasonable, as it is the smoother and more comfortable path. It is the path i would choose to go on myself.
Taking into account bikes is not inherently "anti bike". In fact, i would consider not including the southern path to be more detremental to people in large vehicles as the router will tell them to do the more complicated manouvers.

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