Unfortunately, some process occurs and attracts people to this supportive data, discarding additional factors, and contrary information.
Here is a map of coral diversity:
Notice how corals are more diverse in areas with highest annual temperatures:
This struck me, particularly wrt the Red Sea, which gets quite warm.
Indeed, the Wiki page: https://en.wikipedia.org/wiki/Red_Sea, reads:
“A recent underwater expedition to the Red Sea offshore from Sudan and Eritrea[18] found surface water temperatures 28 °C in winter and up to 34 °C in the summer, but despite that extreme heat the coral was healthy with much fish life with very little sign of coral bleaching”
Laboratory experiments show coral bleaching with increased temperature, but the Red Sea example, the paleo record, the variety of corals and alga, the other factors with bleaching, lack of a global coral biomas measurment and many other factors mean we should keep our panties on.