Trump says a lot of stuff. I think if he were given the option to rejoin he would do it in an heartbeat.

That said, Elon Musk isn't a big Trump fanboy AFAIK, so everybody assuming this means Trump is back seems kinda strange to me. Is it a billionaire solidarity thing?

That you still believe there is truth in anything that Trump says is absolutely mind boggling. Given the chance, Fat Boy would be back on twitter in a heartbet.