Vettel's Ferrari started from pole but was involved in a crash at the start that also took out team-mate Kimi Raikkonen and Red Bull's Max Verstappen on a rain-soaked Marina Bay Circuit.
It allowed Lewis Hamilton, who avoided the carnage to win from fifth on the grid, to extend his championship lead from a slender three points to 28.
"I'm not too fussed about the amount of points," Vettel told reporters at the Sepang International Circuit.
"Overall it doesn't change anything for how we tackle the last six races."
Vettel was exonerated of blame for the Singapore crash by stewards, but many observers felt the German four-time world champion was at fault as he had forced Verstappen towards Raikkonen.
But Vettel said that he hadn't given the crash much thought since because it was just "part of racing".
"I think it would have been more difficult if I had lost the car somewhere in the race, then it's obviously different," he said.
"It certainly didn't help Lewis scored a lot of points but that's the way it goes. What's done is done.
"It's not the first time I'm in the situation like this and probably will not be the last time -- not that I'm hoping for it to happen again."
Raikkonen said there was no point in dwelling on what happened and that Ferrari could still take plenty of positives from Singapore.
- Kimi won't miss Malaysia -
============================
Hamilton qualified only fifth and team-mate Valtteri Bottas sixth on the grid in Singapore.
Verstappen, who was sandwiched between the two Ferraris, was reluctant to talk about the crash.
"It happened. You can't change it. We try again," said Verstappen.
Sunday will see the final running of the Sepang race after the Malaysian government announced it would not continue to fund the $67 million annual cost of staging the grand prix.
"To be honest I don't know if we're going to miss it," the Finn told reporters.
"It's a nice circuit," he continued, "but the only thing you see is the airport, the hotel next to the airport and the circuit. You can choose from that what you're going to miss, or not.
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