The highest recorded fight night weight for a middleweight title defense was 173lbs. He was mostly 170lbs or less.
Point was, Middle weight fighters are slightly bigger when weigh-ins are the previous day. You get fighters who would have been fighting at 168 in the same-day weigh-in era, now making 160. So today's MWs are slightly bigger than Hagler as when he was at MW.
When Ray was younger he was a complete diva and honestly not too many people liked or got along with him but as he has gotten older he has seemed to learn humility. But man when he was younger he was a jerk especially when the cameras were not around.