It's good that he finally saw sense, albeit 7 years later. Just imagine the profits he could have made, if he was smart enough to buy in 2013 (or 2014, or 2015, or...).
He claims to have completely forgotten about that tweet until it was pointed out to him. He re-discovered bitcoin.
And now that he understands it, his long term view is the same as that of many others who think it is impossible. In a decade or two, eat up gold's marketcap, then in a century or less eat up derivatives to the tune of between $100T to $300T.
Along the way we will have 30% to 80% crashes and corrections, but it's going to $10m ~ $14m per whole corn before the end of pure block rewards without transaction fees (in other words, before the last bitcoin in 2140.) I won't be around then, so I wouldn't really care if I'm wrong about it. This post isn't going to age well I think.
And he's going to educate other companies this Feb 2021 on how to get in, how to buy bitcoin to add to their balance sheets. Bullish.