When I search for information about this, I come up with articles like [1]. But none of the data is provided and the analysis isn't exactly...rigorous, to put it charitably.
EDIT: Why in the world has this been downvoted to -3?! This is a reasonable comment to make complete with an example. If you disagree, blindly downvoting isn't informative of anything except that you don't like a comment.
_________________
1. https://appleinsider.com/articles/18/04/30/2016-macbook-pro-...
Apple has that information, and they've decided it's a big enough problem to issue a repair program and adjust the keyboard in the new version:
https://www.apple.com/support/keyboard-service-program-for-m...
So, in answer to your question, yes we do have an authoritative source - Apple.
I'll concede that the hardware flaws - independent of personal taste about the touchbar or function keys - is a major problem then.