Hi,

Could I ask what all these pavements are for? They're not connected to anything else via crossings, so won't actually be used by any routing software.

Separate sidewalks can be really useful for pedestrian routing on main roads with defined crossing points. Mapping the crossings as well allows a lot of accessibility features like tactile paving and lowered kerbs to be added (a survey with StreetComplete, or Bing Streetside/Mapillary imagery can be useful for this).

Separate sidewalks on long residential streets without any crossings can be a little less helpful, as it can result in a router taking the scenic route around via the nearest crossing or junction.