Comparing two identically designed websites, their weight, amount of HTML and CSS, rendering speed, and best practices.
This study compares two websites with similar design: the commercial Spotlight template from developers of Tailwind vs the same site with semantic CSS.
That is not true. You do need to know CSS to make proper use of Tailwind for anything beyond changing colors and padding. That's the reason why the Intellisense VS Code extension gives the underlying CSS on hover. I'd love to see a newbie try content layout knowing nothing but Tailwind.
That guy just pulled the same "misinterpret what you said, pretend it was your fuckup instead of my own overeager interpretation problem" to me here: https://lemm.ee/comment/10695316
Your use of the word "proper" was ... proper as a matter of fact. This guy's just an idiot who enjoys adding a confounding interpretation with his own distorting commentary.