He sure has changed a lot. 
Not the same person...
What happened to them....generation nothingness happened to them. They, the American HW's, have shitty work ethics, horrible influences and a wannabe thug mentality. The best of them rely heavily on their genetic strengths. Very few of them learn the art of boxing or have the discipline. Their focus is on other shit all together. I guess you could sum it up by blaming hip-hop culture. The bottom line is none of them want to hear criticism, none of them want to work hard, they are more interested the life style of a pro athelete and not the actual effort involved.They all wanna hear about how great they are after trouncing 25 or 30 tomato cans. Most of them fall apart after one loss.
It's funny how shit talkers always say they are emulating Ali...but they never learned how to jab, slip puches, dance and move or even rope-a-dope like Ali, only how to shit talk.