I've always thought the same thing. People always talk about how we'll have digital assistants to do research for us, schedule oil changes, doctors appointments, etc.
But don't ask your digital assistant to get a new email address for you, that's protected by a captcha. Don't ask your digital assistant to make an oil change appointment for you, it's probably against the TOS of the Jiffy Lube website.
People have to start thinking differently about how the web works before we can automate a lot of this stuff. And obviously for 99.9% of the cases you don't want to be able to automate getting a new email address. So I really don't have the answers as to how to fix things.