Could you explain how "any email service" means Google? Is ProtonMail a Google service?
OP's question was about how power users can keep UX control while services degrade their features to cater to average users. That's what I care about, not ideological purity in my software stack.
People like you are the tech equivalents of the militant vegan.
You’re examples:
Google
Google
Google.
Your examples are all fucking google.