The right question should be: did the glass cockpit improve safety?
As we know it is a mixed bag because in GA flying a better equipment can embolden pilots to get into riskier situations.
But the last I checked Boeing, Airbus and others are not giving up glass cockpit in an attempt to improve piloting skills
Personally I would never give up glass cockpit - it gives me superior situational awareness and I can actually spend more time thinking about the big picture (weather, fuel, alternates, etc.). But it is just a tool and can be easily abused like anything else. But if someone questions the value of glass cockpit they should remind themselves of the recent Superstition mountain accident, a family with 3 kids hit the mountain dead on in VFR night condition. Their Turbo Commander wasn't even equipped with rudimentary Garmin 500/600 box.