The internet has enabled developers to track user behaviour in apps and on websites on an industrial scale. And they've done it so successfully and implemented

The internet has enabled developers to track user behaviour in apps and on websites on an industrial scale. And they've done it so successfully and implemented it so widely that the idea of tracking user behaviour in your app or on your website is now considered an expected and completely normal practice. Of course, when it's developers on the receiving end of such tracking they will complain loudly (as they did recently about GitLab). A reflection of the sheer hypocrisy that runs right through programming profession.