Oh dear. (Re: Meanwhile ...)
That old canard again.
Read up the actual studies. There are all sorts of things that cause bleaching events. In this particular case, the bleached areas are in more remote areas, which mean that they will recover quickly, as they have before.
Remember also that "bleaching" is not necessarily "death" -the coral can go through a process of changing the strain of agae to match the current warminer conditions, caused by El Niño.
The authors of the report are annoyed at the sensational headlines it has cause.