We discovered that our home portal has disappeared from Ingress, even though it still exists. I do not see any reason why it should be removed. This wayspot is not on private property, on the public sidewalk as shown in pictures. Please reinstall, thanks.
The first two objects look like they may be on single family private residential property. I cannot locate the third object on street view or satellite view at the coordinates provided - it just appears to be farmland. Are you sure you got the coordinates of that one correct?
It seems these are spirit houses on private single-family residential properties. If that is the case, then they would be ineligible, and thus correctly removed. It wouldn’t matter if they were accessible from a public sidewalk or street.