I know coaches should recognize poor tackling and demand it gets right before the team even leaves training camp...but tackling is something they've been doing since they were 8. They can own much of that debacle.
I respectfully disagree and believe this is wrong to put on the players unless the coaching staff has taught it properly. By "properly" I don't mean telling them the right technique a handful of times. Proper teaching requires 1) consistently using simple, easy to understand explanations/descriptions, 2) showing/demonstrating an appropriate number of times, and 3) getting the players to do it
perfectly the appropriate number of reps in live settings.
This was one of Charlie Weis' faults before the 2007 season with regard to the offensive line. Reports that came out later were that CW had the offense doing drills at 50% speed, with little to no live contact (basically the way NFL walk throughs look like). CW assumed the players were college players and could do the physical stuff if they understood the mental stuff. (He was also dealing with depleted depth, so I think there were injury concerns if they went 100% and someone got hurt.) This hurt not only the offensive line, but had a ripple affect on the defense as the tacklers rarely practiced tackling to the ground at game speed.
The problem is the players were not yet ready for full college level game speed. They hadn't handled enough reps at full speed to have developed proper technique or the muscle memory. You have to learn how to do something at game speed, and do it repeatedly so the mind doesn't have to think about getting the body to do it right.
Maybe the top 5-10 guys in their junior or senior seasons could practice at less than full speed and still be prepared for games. But not the majority and not young players.
There was a highlight from the last game where at least 5 different players came up to make a hit and missed as the player turned laterally and the defender spun around like a helicopter because they were in the wrong position and took the wrong angle. They all did it the same because the coaching staff failed to teach them how to do it properly at game speed.
Reports are now coming out that the majority of camp and fall was spent on schemes and not fundamentals. It's fitting, then, that one commentator compared CW's triple option experiment against GT in the 2007 opener to BVG's 3-3-5 experiment against Texas. Both were failures and both emphasized scheme over fundamental execution.