I've added tracking to my site, mainly for more of a graphical view of how traffic works on my site. It's collected by Plausible so no, it's not being sold for ad dollars—definitely can rest easy there. I might eventually migrate to using a self-hosted form of tracking mainly of page views, but we'll see.
In four newsletter posts, I've had hit 50 of them. Sheesh. https://buttondown.email/jackyalcine. Only if you want to hear from me in your inboxes. The goal is to keep it short and tight.