In other words, it was safer for the plane to continue to its destination, since the reduced weight from fuel consumption during the flight would make a landing safer and the remaining tires less likely to explode.
Logistically, I'd think it'd be easier to have the plane return to SFO (potentially after burning off fuel) rather than going to LAX.
It’s likely less disruptive to ATC at SFO too to not have them circling if they don’t have to.
And there was no reason to think that the landing would go wrong, because the tires are redundant.