In a new unfiltered response, Jack Dorsey openly criticised Twitter’s current CEO Elon Musk’s leadership.

Commenting on Friday under a discussion on his new social media platform BlueSky, the Twitter co-founder said “it all went south” after the Tesla chief’s purchase of the platform.

He said Mr Musk should have “walked away” from the acquisition.

BlueSky, a decentralized social media platform, has grown in popularity as a potential Twitter replacement.

Following their dissatisfaction with Twitter’s management under Mr Musk, many users have flocked to the invite-only site.

Mr. Dorsey, in a reversal of his previous remarks, said “No” when asked if he thought Mr. Musk was the right leader for Twitter.

“Nor do I think he acted right after realising his timing was bad. Nor do I think the board should have forced the sale. It all went south,” wrote the former Twitter chief.

“But it happened and all we can do now is build something to avoid that ever happening again,” he said.

This is a shift in Mr Dorsey’s stance. He had said last April that Mr Musk’s Twitter takeover was the “singular solution” he trusts.

“Solving for the problem of it being a company, however, Elon is the singular solution I trust,” noted the Twitter co-founder.

“Elon’s goal of creating a platform that is ‘maximally trusted and broadly inclusive’ is the right one,” Mr Dorsey had said.

Mr Musk first acquired a significant stake in Twitter in early 2022, and then took over as CEO in October.

While he initially accepted a board seat, he later declined and launched a hostile takeover bid to purchase the company for $44 billion.

Twitter’s board accepted Musk’s offer in April 2022, along with a $1 billion “breakup fee” in the event Mr Musk decided to back out of the deal.

Shortly after making his final offer to buy Twitter, stock markets crashed, and Mr Musk attempted to back out of the deal, sparking a legal battle between the Tesla CEO and Twitter.

The acquisition was eventually completed at the agreed-upon price.

The multibillionaire has been widely chastised for his drastic decisions, which include laying off more than half of the company’s workforce and changing the platform’s content moderation strategies.

His actions at the company have resulted in advertisers leaving the platform, as well as several influential users threatening to leave.

While Mr. Dorsey previously publicly supported the SpaceX and Tesla CEO’s takeover of Twitter, he now claims that things should have gone differently.

Mr Musk also controversially dropped Twitter’s previous user verification system in favor of a new $8-per-month subscription service for accounts to receive the “blue check” tag.

“Payment as proof of human is a trap and I’m not aligned with that at all,” Mr Dorsey said, adding that the payment systems being used for proof “exclude millions if not billions of people”.

“Was I optimistic? Yes. Did I have final say? No. I think he should have walked away and paid the $1bn.”