bxl-forever
Those are not crossings, those are logical connectors between the sidewalk and the bus platform.  We need them for proper routing of pedestrians.

Moreover, they are properly tagged as "footway=sidewalk" and the crossing node is properly tagged as "crossing=unmarked" because there are no road marks here.  I don’t understand why StreetComplete will call this a "passage clouté", which it isn’t.

You can safely ignore those quests if they bother you.