Since Twitter was not their primary employer they don't owe them a thing but it also wasn't a firing for cause. All Twitter did was end a contract with the company that hired them. The contracting company has the option of moving them to other contracts but if that isn't an option then it'll let them go and they can collect unemployment.
Thank you! I am not able to stomach reading about any worthless woke twitter employee so didn’t know they were under a contract.