So what? literally any website you visit that has a http daemon with logs also has your IP address. It's not like they're taking the data you see on the page when you view it, which is unique to your client and whatever last-mile connection you're on at that moment, and re-distributing it to anyone else.
If you think the level of data this site shows is a lot and somehow concerning to you, don't ever use any form of modern FAANG social media...
There are lots of other tools made by nerds, for nerds on the internet that don't have a privacy policy or a set of legal notices. Not everything needs to be treated like a formal "product" because of lawyers. I imagine you'd probably be highly concerned if you saw IRC and efnet 25 years ago too.
look at all these other tools that also don't require you to click through agreeing to a TOS or whatever: https://news.ycombinator.com/item?id=41168877