I’ve seen 2 problems arise - the 1st is if people deploying GW’s dont allow the data to be shown (the tick boxes on GW settings -> privacy page), and after last major overhaul of the map presentation about a year ago the main map shows less data (e.g. no owner shown) with a move to the community page to access the extra info - unfortunately not every GW is in an area that is part of a community…if not in a community the only way to get that info is to reach out to the TTN Core team and request it or if privacy settings dont allow disclosure ask them to reach out to the owner and ask the owner to contact you - not very satisfactory for a ‘community’ effort 
I would ask all owners to atleast check all the privacy tick boxes to allow basic data presentation… I do that for all mine, and try to include some basic info about config/location 
