This is kinda what I always wondered about these "show the numerical impact of your work" stats.

How exactly do you know that? Unless you're a manager or something, how do you know that the company got say, 30% more users and 20% more repeat views after they changed the sign up process?

For an awful lot of companies, the tech department flat out doesn't know what the stats are like for their site/app, or care enough to track the direct impact of their work.

Is that a good thing? Absolutely not, but it seems like a depressingly common one nonetheless.