A reasonable estimate based on sentencing guidelines isn't super hard for a lawyer to work out, and it'd be far more useful for readers, but it's slightly more work and it makes for significantly less exciting headlines.
Lots of things lawyers do are easy for lawyers to figure out. That doesn't mean a programmer is going to be able to make a reasonable estimate unless they both understand the law and the history of the accused.
Sentencing is a fairly well defined things. You have guidelines and upper limits that come with specific charges, and then the judge uses those guidelines and various other factors to then sentence somewhere along that spectrum. Anyone read a handful of sentencing news stories is very well familiar with how it works.
Okay fine. Local man shorts 1 share of IBM and pays a penny to get a call option at $huge. He faces a loss of up to $huge!
I'm not sure what priors the lawyer would use to guess the expected penalty for something as unprecedented as "Crashed a plane on purpose for YouTube likes."
Perhaps the maximum sentence is preferable for the news outlet because it's a number that's definitely not wrong?