Backup? More likely that Hoyer is the short term starter and Stidham holds the clipboard one more year. Unless Stidham blows away everyone in training camp which might be cancelled anyways due to you know what.
Like I said, I wouldn't be surprised at a .500 or worse season during our rebuild year. But Hoyer is the perfect patsie to take the lumps under a bad offensive line. I'd rather not put Stidham in until he is absolutely ready. You don't want him shellacked and destroy his confidence and body like Luck who had to retire early IF he is 'the guy'.
Another option that I like is to draft a high talent/potential QB and let them all have a camp battle for the starting job.