Clear clarification when playground is duplicate and when not.

What does Niantic consider as duplicate?
That's a Follow-up question to this topic.
https://community.wayfarer.nianticlabs.com/discussion/29028/playgrounds-and-duplicates#latest
We need clear clarification to stop trolls. That all wayfarer will follow, and you punish abusers when they don't follow those criteria.
Comments
Giffard already gave an excellent clarification in that very thread. The problem isn't that we need a clarification, the problem is that Niantic needs to compile clarifications like that into the critera page where they can be easily found and referenced.
Only an extremely small amount of players will see that clarification while it is buried in that thread, amd as time goes on that thread will be forgotten and difficult to locate even for those that might remember it.
Already clarified in the November 2020 AMA and Giffard.
Playgrounds have long been a source of debate among nominators and reviewers alike, can you clarify when they should be accepted vs. rejected?
Playground equipment in parks or other public places are great candidates for inclusion. Not only are they great places to meet and be social but they also can encourage exercise! There are a few notable exceptions to this though, playgrounds on K-12 / primary and secondary schools are ineligible. Additionally, individual pieces of playground equipment that are submitted separately are not eligible, even though the playground at large may be. Rather, the individual pieces of equipment should be marked as duplicates to there’s just the one Wayspot for the whole playground.
No, this is not clarified.
There were already a couple of situations where Xezar reports playground as "duplicate", and Niantic removed them (or not). While his home spot is a playground split into 3 parts and Niantic considers it as "not duplicated".
Hm. Giffard clarified it completely different in quoted post. look there for first answer - THIS one playground is special, and swing is NOT part of playground "Podwórko". Only this one. There are two separated sets. Maybe it is. But why? I don't know. Because it's a complete coincidence who owns these portals and who added reso. Isn't it? ;).
And I think - not be bad to clarify in AMA - when is one playground, and when are two or more...
I want to know if church playgrounds fall under the K-12 rejection. Parent leave their children in the care of others there, for Sunday School, and often for preschool and kindergarten during the week. It would be suspicious for unrelated adults to hang around a playground at a place of worship, same as at a school. (Unlike a public park, where strangers walking by are commonplace.)
Why would it be "suspicious" for an adult to hang around a playground at a place of worship, unlike a "public park"? A playground at a place of worship is a public place. Or at least where I live, where it is routine for shrines or temples to have a small playground attached to them (and also a small community centre; typically all 4 are neighbours of each other, so it is hard to tell where each one starts and ends.
You also seen to imply that "strangers" only walk by playgrounds, as opposed to actually hang around them to watch over children. Are only children allowed into playgrounds where you live? If so, I think that says something rather sad about your community.