This official position/ruling by the league was expected, if they want to league to go on (Inter for example this coming weekend have like 6-7 players out on corona, much stronger case then Napoli's bs).
But now lets see what the medical govt authorities like ASL say. Because Napoli themselves dont have much to say or come with. Except whatever mitigaitng case they may be provided by said govt entity. If they overrule their decision, and the protocols in place, it will be very hard for the league to go on as it is currently with that precedent set.