When Bluesky CEO Jay Graber took the SXSW stage this week, she managed to make fun of Mark Zuckerberg without mentioning Meta at all. Her black T-shirt

The Meta CEO had worn a t-shirt with the phrase ‘Aut Zuck aut nihil’ or ‘Zuck or nothing’, refering to a similar Latin phrase on Roman dictator Julius Caesar.

Bluesky CEO Jay Graber emphasized the importance of a decentralized internet at SXSW 2025, advocating for user control over corporate power in social media. With 32 million users, Bluesky allows users to own their online identities and seamlessly migrate if dissatisfied.

When Bluesky CEO Jay Graber walked on stage at SXSW 2025 for her keynote discussion, she wore a large black T-shirt with her hair pulled back into a bun. At first glance, it might appear as though she’s following the same playbook that so many women in tech leadership have played before: downplaying her femininity

Facebook’s history is littered with accusations of monopolistic behavior, privacy violations, and algorithmic manipulation. The only real challenge Zuckerberg has faced in the last decade came from Elon Musk’s Twitter (now X),

Jay Graber, the CEO of the microblogging social media site Bluesky, sent a message to Meta CEO Mark Zuckerberg with a T-shirt she wore at South by Southwest.

Jay Graber wears her distaste for tech billionaires on her sleeve—literally. The Bluesky CEO donned a shirt with the Latin phrase “mundus sine caesaribus,” which translates to “a world without Caesars,