First, encryption is not "obscurity" in the same way you think DRM is.
Second, several other email providers don't think they need to rely on some performance-killing DRM to "protect" their web app (oh no, what of all the value!).
Outlook has a part of their files minified, but doesn't use any obfuscation; apps like ProtonMail[0] and Tutanota[1] are even open source.
(I'm actually starting to migrate off of Gmail to Protonmail myself.)
[0]: https://github.com/ProtonMail/proton-mail/ (the new site, on beta.protonmail.com) [1]: https://github.com/tutao/tutanota
Oh, and there's no need to call people "communists", "attackers", or "criminal scum". Be civil.