Twitter has fired at least 200 more employees, or 10% of its already dramatically scaled-down workforce, according to press reports, as owner-ceo Elon Musk continues to slash costs to make his $44 billion acquisition viable.

The purchase of Twitter last year remains one of oddest business stories in recent times, and the fallout is too. His sudden, high-priced bid was a surprise, then he almost immediately reneged on the deal and was sued. He capitulated when his chances of a court victory seemed dim. Since then, he’s alienated and subsequently tried to woo back worried advertisers and tried several launches of troubled Twitter Blue in the hope of generating additional revenue and fired thousands of employees from a staff that stood at 7,500 before he bought it. Musk had threatened to eliminate two-thirds of all Twitter jobs, now he’s gone beyond that.

The cuts are said to traverse advertising, app support, product managers,...