It's proof she's a horrible writer, she wants a scene to make Harry look good in front of his classmates... So she invents a sport that conveniently has a role where the focus can be on one person and that one thing this one person does is just magically more important than anything anyone else does.... It creates two things, Harry's image as a Gary Stu and the world's most pointless fucking sport.
Can you though? Like the rules as presented in the books are just:
Snitch caught > get 1000pts > game ends
The only other way to get points is in intervals of what? 10? 25 maybe? Let's assume it's 25 because I can't remember. That means you need to be up 40 fucking goals in order to tie if the other team gets the snitch. And that's assuming your entire team doesn't die from exhaustion seeing as the game doesn't end until the snitch is caught lol
100% she wrote that part in just because people kept asking "well, doesn't the team that catches it always win?"
That is also why Neville knocks over a cupboard to destroy all time-travelling devices. I think she is either SUPER insecure or just not a very good writer.
Catching the snitch gets you 150 points, scoring with the quaffle gets you ten points. So you have to score 15 times to match one snitch catch. And the game doesn't end until the snitch is caught.
Fun fact, in one of the pro quidditch matches in the fourth book, the snitch-catching-team actually loses the match. They built their team around their seeker, and basically just banked on him immediately locating and catching the snitch every game, which backfires in the final match of the Quidditch World Cup or whatever, when the opposing team had really good chasers that ran up the score really fast just by scoring with the quaffle.