Oof. I actually really like the majority (with some notable exceptions) of what Material 3 Expressive does from a pure design perspective, but this article is the worst reflection of that.
"Big button easier to find" (let's think about whether "easy to find send button" is the top priority for an email composition screen, because these folks apparently didn't) and "We can make an existing UI less functional by taking up the entire screen" seem to be the writer's favorite parts of M3E.
It's ironic that they got rid of the tall bottom navigation bar and brought back the short one with less padding (likely after all of Google's own 1P properties decided it wasted too much space), because now it feels like that took that failed philosophy and applied it everywhere else.