ChatGPT kindly summarized it:
Elon Musk is challenging conventional business practices with a unique strategy for his tech ventures. Mark Zuckerberg, inspired by Musk’s tactics, created Threads, a potential rival to Twitter. However, Threads’ user experience is disappointing, as it lacks control over followers and displays a non-chronological timeline. Despite its flaws, Threads may succeed due to its appeal to brands and the AdTech industry for data collection and marketing purposes. While not user-friendly, it could still become profitable through data scraping and advertising.
I use it with calibre. Works perfect. Even displays the book covers (no matter where you got them) as lock screen background of the kindle. Can absolutely recommend this!