New wave of resignations hits Twitter after Musk ultimatum

A new wave of $Twitter (Delisted) (TWTR.US)$ employees resigned on Thursday after $Tesla (TSLA.US)$ Elon Musk issued an ultimatum telling them they would need to be willing to commit to a "hardcore" work environment.
Internal Slack messages shared with CNBC showed engineers and other employees posting goodbye messages to a "watercooler" chat group in the run up to 5 p.m. ET Thursday deadline that Musk set just a day earlier.
Hundreds of salute emojis (which convey the message "thank you for your service") streamed by, along with dozens of goodbye messages.
The recent wave of resignations adds to what is now a combined mass layoff and voluntary exodus from Twitter, leaving the company significantly smaller than when Musk first took over in late October.
One engineer said that resignations had hit important parts of the company's engineering operation.