Musk's rebranding came down to his long-standing vision for an "everything app" - basically a super-platform that goes way beyond just social media. He's talked about this concept for years, and Twitter was supposed to be the foundation for it. The X name itself connects to his past ventures (X.com, which merged into PayPal), so it felt like a return to that ambitious project. From a business perspective, he wanted to signal that the platform was evolving into something larger than a tweet-sharing network, even if most users were just there for, well, tweets.
The timing and execution were definitely rough though. Ditching the Twitter brand after nearly two decades of recognition was a massive gamble. You lose all that built-in equity - everybody knows what Twitter is, but X? Most people just saw it as confusing. It probably cost him users and advertiser goodwill when the platform was already bleeding both after the acquisition turbulence. The rebrand felt less like a calculated business move and more like a pet project, especially since the "everything app" vision hasn't really materialized in any meaningful way since 2023.
So yeah, not just vanity in Musk's mind - he genuinely believes in that grander vision - but the execution looked like vanity to everyone watching. A company with better brand stability probably never would've killed off "Twitter" when things were already chaotic.