Respectfully, do we map routes in buildings now? 

No other map system I know does and I'm not sure what useful purpose this serves. If I were to attempt to follow these "footpaths" as shown on the main map I'd get very lost, not to mention needing a ticket or airside pass. Many of them bear only a passing resemblance to what's going on in the terminal buildings. We don't tag paths through schools or houses, after all. 

May I suggest as an alternative Simple indoor tagging: https://wiki.openstreetmap.org/wiki/Simple_Indoor_Tagging

If they are to be kept, I will not argue further if there is a consensus, but could they at least attempt to be more accurate? 

Best, 

DG 