freebeer
For the sake of accuracy and to restore his reputation and dispel FUD, here is what I see:
He added Pokemon to his changeset descriptions as I seem to remember was advocated to new contributors.  This in itself is not a bad thing per se, but due to the selfish and vandalistic bent of a few (that has turned into a deluge), it is now too much a red flag of possibly fake data, and a trigger for pent-up disgust, resentment, even hatred; rather than expressing the background and interest of a newbie.
He added several signs for which he was chastised by 5359 as they were improperly tagged.
He traced, poorly, a park, from lousy imagery.
He then tried to revert (not fix) his added nodes.  In the process he seemed to have missed one, instead hitting a much older (node 1748694985) label for the community, leaving 5280295634 intact.
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I was disturbed as the first of all the changesets I examined was deleting the name, which had me worried about why.
I was able to cycle through the available imageries and interpret what I could see that in all probability the park existed but not as drawn.
At that point it would be my luck that the sun rose and shown brightly through my window (an old computer monitor in my mother's windowless basement, and a webcam) for the first time in what seems like weeks.  When I could have used all the darkness to interpret the contrasty low-sun dark ESRI imagery.  But I'm not complaining.
After redrawing the park as best I could guess (as you saw, a playground could be seen at the north; I could not interpret the objects to the south as anything, except the trees), I added more detail around the area.
Then I looked over the rest of the changesets to come to the conclusion above.
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I believe this is just a newbie mapper enthusiastic about Pokemon GO, making all-to-typical newbie mistakes.  I see no evidence of malice; on the contrary, the user genuinely appears to want to clean up after himself, and made one simple mistake there.
I understand your frustration and letting off steam as the flood of damage, and poor edits needing inspection, attention, and correction are driving the few of us all to the breaking point, preventing you from taking the time to study and interpret images for minutes (I'm no expert in reading them), time more productively spent elsewhere.
This is exasperated by the deceptive and antagonistic self-centred behaviour of a few, like our octogenarian retiree friend Darwin for starters.
But I feel this contributor is innocent of fiction.  Let's hope he stays that way and resists the urge to trash the map that some others have succumbed to after dozens of non-destructive contributions.
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I hope Lightspeed agrees with and appreciates the improvements I tried to make to his area; it is indeed a difficult area to work with from the discomfort of my armchair, sprawled out on the floor.