Two days ago, Owen Williams shared a story on Medium's OneZero with the title “Google Is Tightening Its Grip on Your Website”. He tells that it seems like Google is trying to get more power over the web in a somewhat evil way by forcing sites to implement an AMP (“accelerated mobile pages”) version. When sites don't implement it, they won't appear in Chrome's discover page or in the top search results.
I generally prefer dark user interfaces wherever possible. My phone is set to a dark mode (as far as there is a dark mode in Android Pie), apps like Telegram are set to dark mode and on the desktop I prefer dark modes too. But the most important software I use everyday is a web browser. And most websites don't support a dark mode yet (because there was no native browser feature for that until recently).