Zen is an incredibly thin layer on top of Firefox, with some rather glaring performance and battery life issues. Battery life in particular was already not one of Firefox's strong suits. It looks nice, there's some interesting and useful ideas there, but Zen is ultimately "just Firefox" the same way that all of these AI browsers are "just Chromium." Ladybird's the only new kid on the block for a decade.

Didn't mean to position Zen as an alternative to Firefox, just that it adds viability to recommending a non-chromium browser cause it has nicer usability than the competition (imo, + arc was a pretty big hit before they pivoted but of course every YC start up was encouraged to use it so that might have helped with the hipness)