It's nice that email providers are getting round to doing a little security work, 40 years later.
Having spent quite a bit of time as a total novice in such activities as ad-blocking, protecting personal data, obfuscating my identity and generally covering my tracks (with the aid of AdBlock, Ghostery, Priv, VPN, Tor, etc), it was brought to my attention that the entire construction of the internet could be viewed as a surveillance tool. There doesn't seem to be any thought whatsoever with regards privacy for the individual. I accept there are a lot of legacy issues in common with most constantly evolving systems, but I find it very difficult to imagine a banking network being set up in this way or a military comms system. Espionage is much older than the internet. The designers seem quite negligent in respect to security/privacy, despite the fact that we know how nosy governments and corporations are. I'm not given to conspiracy theories but it does seem a little odd.
I heard the father of the net, Tim Berners Lee, pontificating on the issue and I like the guy but isn't he one of the major offenders in this respect? https://www.dailyherald.com/article/20170408/business/170409118/