Anyone could hold and decide for their holdings but as for me, Elon's statement would help any of us. Maybe he's trying to tweet things about crypto again because he wants to manipulate the market through it which isn't possible anymore because people are now skeptical and learned from what he did to Doge before.
It was his crypto asset and it's his decision to not sold a single of it and I guess he just made a good decision and as a businessman he would not probably going to sell his asset at the low price, I believe he would going to sell once bitcoin reach another milestone of ATH. So far I believe that it's good thing to know that Elon Musk were now starting to use crypto names especially bitcoin in his tweets, well actually I don't like how Elon Musk used to shill or hype a coin but knowing this last tweet of him I can say this might be sounds good for bitcoin.