The person you're referring to is Jack Dorsey, one of the co-founders of Twitter (now X). His journey with the company he helped create is quite well-known for its ups and downs.

Here's the breakdown of his "dropout who created Twitter—before getting fired" story:

The Idea and Early Days: Jack Dorsey, along with Noah Glass, Biz Stone, and Evan Williams, were working at a podcasting company called Odeo. In 2006, Dorsey proposed the idea of a short message communication service, which eventually became "twttr" and then Twitter. He sent the first public tweet on March 21, 2006.

First Stint as CEO: When Twitter spun off into its own company in 2007, Dorsey became its first CEO. He was seen as a visionary, but there were reportedly concerns from the board regarding his leadership style and focus. Some accounts suggest he was prone to leaving work early for other pursuits like yoga and fashion design, and there were issues with site stability.

The Firing: In 2008, Jack Dorsey was removed from his position as CEO by the board, specifically replaced by fellow co-founder Evan Williams. This marked his first "firing" from the company he helped build. He remained on the board as chairman.

Second Stint as CEO: After a period away where he co-founded Square (now Block), a successful mobile payment company, Dorsey returned to Twitter as interim CEO in 2015, following Dick Costolo's resignation. He then took on the role permanently.

Second Departure: In November 2021, Dorsey stepped down as CEO of Twitter for the second time, handing the reins over to Parag Agrawal, the company's former Chief Technology Officer. While this was a resignation rather than a direct firing, it was another significant departure from the company he co-founded.

So, while he wasn't technically "fired" in his last departure, the narrative of a founder being ousted from his own creation is a key part of Jack Dorsey's legacy with Twitter.