Cool. Good article - which shows exactly what I said.
Solve is not the same as reduce/improve/alleviate.
As Musk knew full well when he tweeted it. No one has a solution for it, the best you can do is alleviate it for a bit.
Is he being a pedantic dick ? Yes. Did the original tweeter provide a plan to solve world hunger. No.
He provided a plan to reduce world hunger for a time. It's not a solution, it's a reduction in misery which I'd be very happy if Musk paid for. But it's not making world hunger entirely go away even short term let alone long term.
It's possible. He literally burnt an extra 150 million dollars by bumping his offer for twitter to 54.20 just to make it a stupid 420 meme. It's not like he doesn't have the money to pay those bills.