Doughty survived three coaching staffs, so did Golston so it's hard to justify the claims he was only there because the coaches were lazy
On the years he was on the team some attempts to improve the position included Anderson Russell, DeJon Gomes, Chris Horton, Jordan Bernstine, Jordan Pugh. These are the kind of people you're talking about. They made the team. Sometimes they played ahead of Doughty. Then they got hurt or they stopped playing better than him