It's kind of like us here, isn't it?
"He will surely win at least one more French Open and he is bound to win again at the Australian Open. If his knees hold up on the grass, he can definitely win Wimbledon again, too."
Saying he'll surely bound to definitely isn't analysis, it's wishful thinking. I don't know how many times over the centuries I've heard the winner of a slam pronounced to be soon the GOAT. First heard it with Bjorn. Borgie wasn't chasing # of slams as any criteria. Straight-up calendar year slam, or nuthin'! Retired on 11 slams, just one behind Emerson, who then held the record. Wasn't an issue for Borg. Nor was a "Career Slam". He didn't even bother with Oz, saying he'd only play there if he had the other 3 in the bag, Oz then being situated in December.
I remember John Barrett, the esteemable BBC commentator, wondering was Boris Becker going to become the GOAT - straight after he'd won his first Wimbledon, aged 17! Dan Maskill wasn't silent then, fellers. Between these two, McEnroe. After, Lendl. Then Pete. Then Roger. Now Rafa. There might be something in this, or it might be that the meat factory of hype starts churning.
Watching brilliance is seductive, that's the lesson of the day...