This is a good verdict - defamation in the media is a very serious problem. It's unfortunate that it took a person like Alex Jones to convince people of it. If anything he should not be taken seriously. Those who are taken seriously have gotten away with much worse by merely apologizing or correcting themselves (as he did as well).
As for the amount - the highest fine paid by Wall Street firms for the 2008 crisis was less than $100M. One of those numbers is unjust for sure.
I think there's a strong case that Alex's apologies were not genuine nor would result in changes in future behavior on air. Even as the first trial was wrapping up Alex was calling one of the plaintiffs "slow" and "manipulated by some very bad people."[1]
In fact he was just doing his show, showing the verdict being read, and mocking the father of one of the slain children's reaction. I can think of no stronger proof that any apologies given were not genuine.
As for the amount - the highest fine paid by Wall Street firms for the 2008 crisis was less than $100M. One of those numbers is unjust for sure.