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Mark Cuban Warns Bluesky’s Echo Chamber Is Driving Users Back to X

He argues that Bluesky’s liberal-dominated user base has stifled nuanced discussion with hostile responses.

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Mark Cuban spoke out about behavior on Bluesky's platform.
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Overview

  • Mark Cuban wrote that Bluesky’s environment has grown “ruder and more hateful” and that nuanced views are often met with extremist labels.
  • Cuban warned that the platform’s lack of diversity of thought is pushing users to return to Elon Musk’s X.
  • Bluesky’s user base expanded from 10 million to 30 million between November 2024 and May 2025 as liberals left X after Musk endorsed President Trump.
  • Bluesky CEO Jay Graber told Vox Media that users joined to explore a new community and to escape changes on X.
  • Analysts say Bluesky’s decentralized structure and advanced moderation tools have unintentionally created a political silo that discourages debate.