I found this piece arguing that Chomsky needs an heir, and it should be the author amusing.
There are some glaring problems. First, Chomsky isn’t really a leader of anything, though he is influential. Second, if there is going to a left star in the US, it will be an American. And of course these things aren’t predetermined. Leaders earn the right to lead organically. They aren’t appointed.
Still, the broader theme is worthy, namely that the left should do more to promote boldface names. Leftie media stars would get the message out; we currently have no one. (Liberals don’t count.) But there won’t be any unless they are promoted and supported, as the right does.