(yes it could be a YL, and either case they're trying to get away from QRM.   But indeed look like hobby ham antennas.  Looks like a lot of yagis, a quad, and go up to 160m at least. Should they be mapped is the question, while most hams "plant" their antennas and they don't move, sometimes they do change them around or add new ones.
And when they go SK they typically get torn down, usually the because of the XYL...)