In don't wish this guy to be unemployed or even not flying anymore. There are numerous discussions about how to treat crew that have an alcohol problem. I don't want to touch this subject.
But if you were to sit on this plane flown by an intoxicated crew member - I am not sure you'd be too happy about it.
Putting someone behind bars was meant to imply some sort of punishment (doesn't have to be the proverbial bars, can be any other sort of punishment deemed appropriate).
But filing a legal flight plan being intoxicated and including himself in the crew setup already serves as a criminal offence - IMHO.