This recent wiki change by Emvee <https://wiki.openstreetmap.org/wiki/User:Emvee> is in my view not helpful, or even misleading, as it does discourage a wide-spread tagging practice (if we like this or not is a different question, but it's established tagging, and the wiki is supposed to describe the establsihed methods of tagging)
The change describes what a router does with bicycle=no on a node, see https://github.com/abrensch/brouter/issues/265 Already discussed elsewhere but having routers ignore bicycle=no in combination with highway=crossing means that it is more or less useless as routers are they main data consumers while at the same time crossing data is far from being complete. My take is that it is not a wide-spread tagging practice and it does not add new information as weather it is a pedestrian issue can be deduced from the connecting ways.
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