I don't need/want a proxy, every country since day one has had a "Raven" and "Karma" to go with it, lets not forget "CyberPoint" or "DarkMatter"
Tor, proxy, whatever, your isp knows who you are, same with your government your not fooling anyone.
If you think since day one that the telephone/internet (landline, now also cell) was being used worldwide with millions of people that any government ... (ask ma bell, especially pre cold-war days)
stopforumspam.com and other sites like it, *try to stop the spambots (the majority of people that use/pay for protonmail)
The company is a pile of shit unless you are invested in spambots
You can find all this out for yourself by using a search engine, the best reads are the spam kings who got caught, what they used, what country, and how they got caught. how's that for privacy. (never was such a thing)
I will now put my tin-foil hat & underwear on