> Asking people to be clear about what is and isn't FOSS is a basic consequence of that.
You are throwing around wild accusations bordering on the conspiratorial and making demands that are just beyond reason. The simple good-faith reading is that the Sentry people want to be as "open as possible" without compromising their business to the point of being unviable. There is nothing I know in the entire context and history of Sentry that would dispute that, and you've certainly provided zero evidence of it.
Quite frankly it amazed me that the people at Sentry even try in the face of complete rubbish that's being thrown around here by various people.