The author is saying that the current crop aren't colorful enough to suit him but I think in reality in the old days there wasn't constant colorful antics. That happened once in a while and now people are remembering that as if the players were constantly putting on a show. They weren't. We have incidences now too once in a while. Remember Keifer throwing his racket at Grosjean? Remember Berdych shushing the crowd???
Personally I do see lots of charisma in tennis right now. Just because there is no whiney brat boy like Connors or McEnroe does not mean there is no charisma. I never thought Connors or McEnroe had true charisma....they were brats and they took one's attention....but that's not charisma. Borg had the charisma and he was quiet on court and a gentleman.
There wasn't constant antics - mostly it was great tennis...as today. People just play up the misbehavior because it sells.
But I disagree that Mac and Connors didn't have charisma, and another post where you said that they weren't liked. Are you old enough to remember those days or are you just basing your opinion on what you've read and what others have said? I did watch them in their prime, and they definitely did have charisma. And they were very much loved...or hated. And that's good. Good guys vs. bad guys always creates excitement. Its the basis of most books and films...and sport.