There's basically no credible evidence of this happening. All there is are vague anecdotes which are easily explained with confirmation bias and/or the birthday paradox.
We don't need the pitchforks just yet, sure, but shit, you have to remain realistic about these things.
Your words, not mine. I never made such claims, and you're trying to move the goalposts from "Meta does this" to "I'll be surprised if Meta does this".
I think you mean "I'll NOT be surprised if Meta does this", which is the reasonable position of any rational person to take.
I'm allowed to extrapolate expectations of future behaviour, based on past behaviour. Doing otherwise is naive, dangerously so if you're responsible for someone else's security or privacy.