I've got no qualms with the product mission for the email tracking protection, I think it's a great one and I utilize email tracking protection myself. I made this post because I really like DuckDuckGo and I was just so astounded at this behavior. I tell everyone to "just use the duck website" because I really do believe in your mission, and I hope this post doesn't set off too much bandwagoning. My concern is voiced from a standpoint of support, not negativity. I really appreciate the opportunity to exchange this feedback with you directly and especially to add to this post that I really do generally love what you're building. When it doesn't get in my face when I'm trying to work.
I hope this post winds up being useful feedback. The decision to ship this into the product is mystifying to me. I would agree with the other users saying this should be recalled immediately while any internal discussion about it is ongoing.
Yegg discussed it the last time email protection came up on the front page - rolling it out internally into their android browser was the main goal, and the extension for others. The motivations are in the old hn posts. They could have rolled out a new app and extension, and maintained those on top of the current ones, but those would be extra codebases to maintain.
I understand your concern though and again will take it to the team. Popping up a level, though, the goal of our product is to be the "easy button" for privacy, and email protection is a big part of it, since as we (and others) have gotten much better at web tracking protection (e.g., see https://help.duckduckgo.com/duckduckgo-help-pages/privacy/we...), unscrupulous actors have done more and more email tracking, using your email address as a unique identifier to track you across sites and putting email trackers within emails to do similar. So, when you sign up for forms online, to escape this tracking, you really should be using a per-site alias, as well as using a service that strips email trackers from emails so you aren't tracked on email open.