As per Crikey and the AFF forum which has a FlightRadar24 screenshot about that time, two SQ aircraft (inc an A380) and an AI aircraft were quite near to the MH forum.
All were presumably above the 32k NOTAM zone.
I think most will see MH as being very unlucky here, albeit bookings will undoubtedly suffer.
Note that various Govt entities own 70+% of MH, and I believe a fair chunk of MAHB (the owner of pretty much all the airports in the country). MH disappearing would be very detrimental to stopover tourism as well.
So I can't see MH disappearing, the Govt would have too much to lose.