Mark Cuban Critiques Bluesky for Growing Toxicity

Billionaire Mark Cuban seems to acknowledge this week that the liberal social media platform Bluesky, which has taken over for X, has turned toxic, filled with escalating “hate” fueled by rage.

In a recent series of posts on Bluesky, Cuban expressed concern about the rise of animosity among users—many of whom are liberals. He noted that even if people generally agree with 95% of a topic, any dissenting opinion can lead to being labeled a fascist or something equally extreme.

Cuban pointed out, “It’s kind of pathetic how the conversation has shifted.”

Bluesky, a platform developed by Twitter co-founder Jack Dorsey, has experienced significant growth since the 2024 election of President Donald Trump. Dorsey stepped down from the board last year.

Recent research from the Pew Research Center indicates that Bluesky’s user base has surged from 10 million to 30 million between November 2024 and May 2025. A large number of these new users appear to be liberals seeking a more accepting online environment.

Prominent liberals such as actor Mark Hamill, actor John Cusack, and author Stephen King have also migrated their anti-Trump sentiments from X to Bluesky since Trump’s election victory.

Cuban initially joined Bluesky with high hopes, posting a warm greeting: “Hello, a world without hatred,” shortly after the 2024 election.

However, it seems Cuban’s perspective has changed. Recently, he remarked, “The replies here might not be as overtly racist as on Twitter, but they certainly are unwelcoming.” He mentioned how engagement often devolves into extremes where disagreement could lead to being labeled a Nazi fascist.

In another instance, Cuban shared a Washington Post column titled “The Blue Sky Bubble Harms Liberals and Its Causes,” which argues that the hostility towards figures like Musk and Trump creates an echo chamber that stifles positive discourse.

He concurred with the piece, remarking that the lack of diverse thoughts on Bluesky is truly a problem.