It is an extremely complex topic that the average person has almost no understanding of, especially not after reading a few contradictory pop science and news articles written by non-experts.
The good news is you don't have to be an expert in geoscience to see the connection isn't as simplistic as many assume. Look at the data instead of having preconceived ideas. As an example, when you look at sea temperature data for many of the areas worst affected by coral death in recent decades (Maldives, Seychelles, parts of the Caribbean) you will see they have only seen moderate or even no temperature rise, while many other regions have seen more dramatic rise in local sea temperature and yet have healthier coral.
The fact that the GBR in Australia has seen temperature rise and coral death does not necessarily mean that there is a direct causation or even that it's the main cause. Have you considered other causes play a role?
The good news is you don't have to be an expert in geoscience to see the connection isn't as simplistic as many assume. Look at the data instead of having preconceived ideas. As an example, when you look at sea temperature data for many of the areas worst affected by coral death in recent decades (Maldives, Seychelles, parts of the Caribbean) you will see they have only seen moderate or even no temperature rise, while many other regions have seen more dramatic rise in local sea temperature and yet have healthier coral.
The fact that the GBR in Australia has seen temperature rise and coral death does not necessarily mean that there is a direct causation or even that it's the main cause. Have you considered other causes play a role?