Getting furious and taking sides unless you have direct knowledge doesn’t seem particularly helpful.
But the whole point is, we do have a great deal of knowledge about this pair, supplied endlessly by themselves. It is the exploitation of private family matters without substantiation and for money, that incenses so many people.
Wallis Simpson was the scarlet woman partly because the public, unless they had access to foreign news, were generally not aware of Edward V111's unpleasant character. Diana promoted her real and imaginary sufferings to gain sympathy and her son is avidly following her lead. I can't think offhand of any other royals who have openly attacked the family to which they belonged, whilst exploiting the to connection for fame. Sarah Ferguson has never criticised them openly, despite her disastrous financial dealings, partly due to a poor divorce. settlement.