Dear
Raph Koster's Letter to Leigh,
You were right when you said that the authors of "personal games" would probably take you the wrong way... It's hard not to. It's impossible to divorce the politics from the forms of these games, which, yes, makes them difficult to critique as formal designed objects without appearing to attack their politics.
These authors argue that "apolitical formalism" is inherently political, that the worst politics pretends it's not politics. Porpentine
tweeted that she prefers "blatant bullshit over honeyed poison." (Uh, she was talking about you, by the way!)
I'm sure you'll understand these authors' reluctance to trust this kind of criticism after the past decade of sustained critical attack on such games and their contexts -- perhaps these "crimes" weren't always inflicted by you or whatever, but it's certainly a trigger when you begin your letter with wondering, "what is a game?"
My brain shifts into red alert. That line of inquiry has been a long favored tool of well-intentioned oppression, because these arguments often masquerade as thoughtful discourse but function as a weapon of de-legitimization, that argue these personal games can't really fit a formal definition of game. The emotional leap is that these people can't really fit a formal definition of people. Adding, "it's okay if it's not a game" comes off as sounding like, "it's okay if you're not a person," which doesn't really help you seem apolitical.
Again, you're aware of this. You are a very carefully written letter.