Here is what happens when you install a theme published by me, Peter D. Gutierrez aka nosacrifice, and despite the URL link, I have never smoked crack in my life.
I began creating themes as a hobby, and started sharing them thinking others would perhaps like some of my content. Since I began, I have over 300,000 themes in use in the Google community. Having stated that matter of fact, here is where I stand on privacy and this is my Privicy Policy now and since the very bad Shazam theme I first uploaded about 4 years ago.
I have spent hours creating themes, I've not made or requested a cent for the free use of my themes and in fact, when time has permitted have taken personal requests from users and have created themes exclusively at their requests.
Thank you for your time and while I understand the need to protect data, I assure you, I have no access to ANY data from ANY user and the thought of collecting data or embedding some sort of code in my work has literally NEVER crossed my mind.
So good people, enjoy...or don't.