As you have been told, Google collects all possible information about users' IP and more about servers, operating systems... That is why privacy is affected to the maximum. Like I said, I imagine the admin doesn't have GA installed for reasons like that or similar.
The truth is, I don't know if there are other types of tools with the capacity and power of GA but keeping privacy in the foreground.
The work you do with SimilarWeb is incredible and we all thank you for your effort and dedication.
Honestly, I'm still looking for a more effective and accurate website analytics tool than SimilarWeb, and ideally, it would be free. While SimilarWeb Premium account might be better and more reliable, but unfortunately, I've never had the chance to use a Premium account to evaluate or extract more data from it.
Given the number of blockchain projects in this market, I hope we can have a dedicated website analytics project with low costs, while still ensuring that website data isn't compromised or misused for any shady purposes. For now, I'll have to make do with what SimilarWeb offers for free.