For online maps I'd guess that placing an emphasis on navigation instead of exploration/discovery means that the navigation route as well as your current positi

For online maps I'd guess that placing an emphasis on navigation instead of exploration/discovery means that the navigation route as well as your current position on it should be always clearly visible. The map underneath then get desaturated and toned down enough to never interfere with that. Whereas paper maps never had the problem that you want to see an overlay amidst all the map lines.