Where did you get the 2x to 3x data point? Also, does your data source show anything different on the other issues around slowing of hiring and additional churn this year at Uber?
It is possible that the top line # might be problematic because it requires self reporting, but there is still signal in the # of people that are self reporting joining and leaving.
You're sourcing Linkedin for employment data and using that to say there's a churn problem at Uber?
At some point, you will learn to try to extract signal from imperfect data. It’s a key skill. If you wait for perfect data, you will miss the trends until they are in the rear view mirror.
Unless you believe that there has been a sudden mix shift in vendors vs. employees, the general analysis of churn and hiring still hold. You are only debating the multiplier on numerator and denominator.
Those are less important.
If that's the number you are getting from LinkedIn, then you can consider the LinkedIn numbers to be absolutely worthless. That number is 2x to 3x the actual value.