Now I see why Justin Sun is a hero in crypto world because he bought up Bitcoin when it was low and help it recover LOL.
And for OP I think you have forgotten that it all started with Bitcoin?
It was the first ever cryptocurrency that succeeded and I think without it there wouldn't be alt-coin?
Well.
We can say that he's a hero because he's bought bitcoin and will always be a guy that supports bitcoin. Think of the profits that he's made with his own coins.
Then, those profits will be allocated and used to buy bitcoin which is really going to make him a hero.
