The fact of the matter is, as bad as our options at LT appeared, as opposed to taking a flier on a guy that some scouts had graded as a second or third round pick, we drafted an RB who probably would have been a UDFA himself when we already had strength at the position (and let's not argue about the status of the RB corps today because hindsight is always 20/20).
No one knows how a player will work out when it comes time, but a fool could really see that Bell and Chandler weren't the answer to protect Cam's blind side. As such, Hurst was the more logical choice because if he pans out you gain a lot and don't really lose much. What's laughable is that now Hurst is starting and the FO didn't even value Gaffney enough to protect him from the likes of Belichick.
You realize that at least 80%+ (90%+ some years) of 6th rounders are complete busts meaning they get cut before their rookie contract is even up. The ones that do work out are usually backups or STers. Getting a starter in the 6th or later is rare and even then they usually aren't ready to start right away. There are plenty of years where there's not a single immediate starter in the entire 6th round out of ~40 picks. Seriously you guys look pretty foolish complaining that we didn't land a day 1 starter in the 6th round, at a specific and premium position no less.