The platform’s billionaire owner has seen its value plunge as advertisers run shy, revenues drop and user numbers fall

Two years ago, there was some trepidation among advertisers, anti-hate-speech groups and staff about Elon Musk’s acquisition of Twitter.

Those concerns have been borne out: advertisers have sharply reduced spending on the platform, Musk has sued nonprofits over their coverage of a rise in controversial content and about eight out of 10 employees have been sacked.