That's fair, it was based on a similar browser called Arc that had ambitions to reinvent browsing. That one was chromium based though and maintenance stopped when they wanted to create another AI powered browser. Then the Zen people recreated Arc as an open source browser based on Firefox. I was already used to Arc so Zen was familiar.
I think there are a lot of benefits to the way the UI is laid out, give it a try you without changing any defaults for a week or so, you might get hooked.
I think it will become easier and easier to generate content tailored to individuals and all that noise will make it harder for human created content to pierce through, until it becomes too impractical to create and distribute content. Then it will take some kind of quiet revolution where everyone starts rejecting all forms of technology as overstimulating, and move towards simple communication devices to try and connect with each other.