I get your point, but I want to mention Apple’s Hide My Email feature. It’s not 100% perfect, and its privacy would surely not survive a government request, but

I get your point, but I want to mention Apple’s Hide My Email feature. It’s not 100% perfect, and its privacy would surely not survive a government request, but it allows you to use temporary emails that are foolproof, since they exist on the icloud.com domain. Other email providers should provide this easy obfuscated alias email address