Look: Three of these 10 "improvements" deal with corner shaping, and two more will inevitably need extending, as I imagine frontend devs get around to, "GPT make reading-flow responsively round only the outside corners," and, "Claude how to squircle the individual grid cell borders when using rule gap decorations."
I understand CSS wants to do all of the things and do them well, but then the eye candy gets overused on every webpage and web framework template to the point that practically no site feels different; it's all "logo, four links, giant-ass 'call to action' rounded button in the bold colored top nav, rounded corner cards in a grid layout 3 to 4 cells wide (or in a slider), gratuitous whitespace, rounded corner everything actually, maybe a gradient text or background or both, hamburger menu on mobile, all styles inlined in the HTML classes".
Going down the list of Fortune companies, three of the top 50 don't "round corner" everything: Berkshire, Exxon, Morgan Stanley. A few more would count if you permit rounded buttons only. Marathon is a weird outlier; they have hexagonally rounded elements buttons. (Also, some of these sites must be hosted on a Zune. It takes 50 full seconds to load Cencora's main page.)
I can't say that I do web dev any better, although I am disappointed by the looks of the modern internet, and I don't think more artistic flair will make it better, just as I don't think houses and cars and suits benefit from strange shapes and colors.
although maybe more choice will free us from the confines of everything looking like Tailwind? (Despite my complaints, I am grateful for progress and also am absolutely not looking forward to people misusing functions and dropping 18 errors and 11 warnings into console.log AHEM LENOVO because they can't be troubled to write good code/markup.)