When news articles mention the maximum, especially in headlines, it feels a bit misleading. It seems there's a decent chance there is little or no prison.
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.
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?