While developing your own analytics seems like overkill, you definitely can host your own analytics, using one of the many solutions where all the analytics data are kept on your own servers.

I see even HN needs '/s' .

You'd think stating that marketing doesn't matter and everyone has time to develop analytics would trigger some sarcasm detection somewhere

There are others in the thread repeating that sentiment in a much more serious tone, that’s why I had to ask.