Hester was a return man first, WR second. He wasn't a starting WR.
Was about to post this.
The Bears didn't draft Hester to help their receiving core. The Lions signed Tate to do just that. If the coaches think it's safe to put him back there, fine. But to say matter of factly that injuries as a return man don't factor into certain players not getting the job back there is showing a lack of knowledge, or trolling. This could go either way.