> I have encountered one instance of "AWS just simply denying and hiding any outages until they're undeniably proven" so far this year, so I suspect it does happen. But overall, I do feel like I've had less unexpected behavior or service interruptions on AWS.

Fewer spurious niche "affects only you" problems per customer, times far more customers, may still equal a greater total number of spurious niche problems, though.

For an awkward analogy, it's like being friends with a con artist. They might have conned you once, or maybe even never. But they might also have 1000 other friends that they've conned zero or one times. It may add up to a lot more conning than the average person gets up to!