Earlier quoted context omitted.
Here's what they are actually collecting: https://github.com/Microsoft/calculator/blob/master/src/Calc...
That's some pretty boring information overall. One which might be cause for concern is LogInvalidInputPasted() specifically because pastedExpression is included in the Telemetry Event. I also have questions on LogConversionResult(). Why is that recording NetworkAccessBehavior or the raw conversion values? Wouldn't knowing the FromUnit/ToUnit be enough to know how much something is being used?
Only "might"? If you just accidentally paste your password to the calculator...