Twitter executives let go after Elon Musk took over the company, may not get their $20-$60 Million "Golden Parachute" payments because Musk allegedly fired them FOR CAUSE. That means they were let go for a reason OTHER THAN Musk buying the company! Being fired FOR CAUSE may negate the Golden Parachute payments!
When the Buyout Agreement between Twitter and Musk was negotiated, the top executives were assured they would get large payments if their leaving was simply a part of the takeover. But apparently, Mr. Musk found out something the Executives may have done, or perhaps something they may have said/represented to him, which may not have been truthful, and Musk has now fired those executives FOR CAUSE.
Two sources familiar with the situation told the New York Times that would mean the Executives didn't leave the company simply as part of Musk's takeover, they were fired for justifiable reason.
While there will likely be heavy litigation over the matter, for the time being it looks as though none of those executives will get their multi-million dollar golden parachutes.