I don’t know much about soccer.
Why was that considered such a good moment?
Just to add to what RFABR mentioned.
First listen to the commentator "The most magnificent dummy
Then look at the genius of the play. He had a free run at the goalie, he knew it is 50/50 between him and the goalie, he knew the goalie (and the whole world) was thinking he was going to take it before the goalie and kick it. There was one person in the whole world who was thinking two seconds ahead of us all.
He decided to keep running on the same line and let the goalie make his move but not touch the ball and let it slip through on its own and then chase it and kick it to an empty net.
The genius of it is the world thinking one "obvious" way and he had totally different and more spectacular move. If he did the "obvious" it was 50/50, he ight have gotten a foul, collided with the keeper, or let the keeper clear it. But he pulled an outrages dummy.
As yourself, when you watched it the first time, you though he was gonna kick it before the keeper, right? just like all of us. And,his reaction after that priceless. I keep thinking it is going to go in every time I watch it LOL.
Here is another move (at 3:35 - the video should start there. In case it doesn't, just jump to 3:35)
The first one is the more outrages moment, but just want to show the genius of the man.
Nobody, NOBODY did these things back then or even thought it about it.