Presumably it's a case of the Clubs being able to demonstrate that they've followed the PRL COVID protocols to the letter and still had positive cases - i.e. they've done everything asked of them / everything right but effectively get penalised.
I'm guessing that's why teams voted for the 4 points / 2 points in the event of a COVID cancellation. I don't think there's any right answers here - 1 or 0 points seems unfair if they've followed the rules but just been unlucky. 2 points each still gives points.