I read the article about ZeniMax's suite, and it seems to be because Carmack was on their payroll when he developed some of his ideas. Then he worked with Luck

I read the article about ZeniMax's suite, and it seems to be because Carmack was on their payroll when he developed some of his ideas. Then he worked with Luckey. Unclear why Facebook would fire Luckey because Carmack brought some grief with him. It'd be interesting to know how exactly the lawsuit implicated Luckey. Then it'd be easier to understand why Facebook fired Luckey.