So you have done a poorly designed website which is nothing but yet another uploader with file compression (using third party tools) and some other falsely claimed features (caring about privacy while using Google Analytics, AdSense, Disqus and did not dig much more). This is an okay idea, but being serious here, this does not take more than a few days to develop and should not have much attention, except if there are surprising features I am not aware of.
Disabling Analytics and AdSense is very easy - just enable DNT on your browser. We haven't found any acceptable alternatives, although building our own analytics software[1] is on the roadmap.
There are other reasons, but PHP is a pretty big one. If we're going to use anything other than Google Analytics, we want to integrate it pretty deeply with our frontend. We were thinking of making a Flask extension that would capture all non-personal information without having to serve analytics code to the client. Also, as far as I know, Piwik does not support DNT.
