To increase the privacy even more, you could hash the week number + year as well, as well as more things, but for the launch and MVP, we are sticking with hash of just the IP.
Doing analytics always needs SOME kind of tracking, you'll see that it is not a problem, it is FAR better than letting Google track you using AdSense, that you can agree to.
Besides, everything is deleted after 7 days. Do yourself a favor and lower your cortisol levels, your body will thank you when you get older