(Note that it's important that the statements are false, and depending on some details, that either they were known to be false at the time, or that there was a reckless disregard to the truth, i.e. no effort was made to determine if they were true or false. If you state something that is true, or is false but you had good reason to believe is true, or that is merely an opinion, then it's not defamation even if someone harassess them or worse)
Holy shit the last 8 years really have damaged our understanding of what “facts” are.
I do think there should be some other way that would lead to Alex Jones lose his audience. But I don't see anything happening yet.
Trump and Elon are not nearly as bad as Alex Jones (arguably), and lots of people don't like them, but they have an audience, lots of other people like them, support them and send money to them. If they are not held responsible for things they say, if Trump is aquitted of January 6th, I don't think people should expect much to happen.