Thank you for mentioning our lib! :) I mostly agree with your comment. It's really hard to solve these issues without violating the visitors privacy and saving

Thank you for mentioning our lib! :) I mostly agree with your comment. It's really hard to solve these issues without violating the visitors privacy and saving state on the client device. I think the approach is "good enough" if you want to know how well your website performs or to detect trends, but you will definitely need more invasive methods to gain more insight.