I am using Sync, and I paid for a year of it. A year from now, I'll evaluate and maybe pick something else. Do I care if it costs a tiny bit of $ for a solid app experience that performs better than the rest, because it has dedicated development resources? Nope. Having read the details on what data is collected, do I have privacy concerns? Nope. Do I think folks have gone a little over the top about certain things? Yes. Bad enough having to leave reddit without making it even more complicated.
Delusional that they think distributing that book in that country will promote tolerance. "So, tell me more about your 'Prophet' that marries 9 year old girls...".