Gated communities are not landlocked. They are restricted communities, and are acceptable per Wayfarer criteria:
As for issues with game play, this would best be taken up with PoGo help chat, if you believe there is an issue. Keep in mind that someone may live near this gym, have notifications on when their Pokémon is removed from the gym, and immeditately go back to defeat the new mon in there and retake the gym. It’s not the best etiquette, but it’s allowed.
This is also a neighborhood of townhomes, so not single family private residental property, so the LFL doesn’t meet removal criteria.
Here’s what we’re actually doing with Wayfarer. We’re creating a map of POIs that get added to the Lightship map. Lightship is used by Niantic games for game play locations, and is also open to developers. If this Wayspot was removed for the wrong reasons, this would also affect the other games that use it, such as Ingress.
More info about Wayfarer can be found in the help center: