in my experience the browser went through a poor engineering phase just as Chrome was getting good, and that continued for quite some time, the mobile browser took a very wayward turn a few years ago
oddly this happened at the same time as Rust and Firefox OS appeared which i think are phenomenal achievements
so Chrome ate Firefox’s lunch and the series of weird CEOs have compounded that by attempting to cover it up with progressive sounding PR
because Ubuntu has been fantastic for a long time now