Why is Camilla Parker Bowles so controversial?

Because she had an affair with Prince Charles while he was still married to Princess Diana.

Because she was an old girlfriend of Charles’ and helped inveigle Diana into a loveless marriage, then became his regular mistress, arguably causing Diana to be where she was when she died. Then she married the next head of the Church, which, within the memory of many, would not have been recognized, as her real husband is still living.

The former Camilla Parker Bowles had an affair with the Prince of Wales. Charles' marriage to Diana was not a success--both had affairs. But, to biased Diana fanatics who fail to see facts, Camilla ended the Wales' marriage.

Who is that, there is no one named camilla parker bowles, like every other woman on the planet her name changed when she married charles.

It should be obvious why, she is an old fornicating equine that is no use to anyone except Prince Charles.

She isn't especially. She stopped being Mrs Parker Bowles when she divorced her first husband, who was himself a serial philanderer.

She had an affair with the Prince of Wales, just as Diana had numerous affairs whilst they were married.

A human-animal hybrid could potentially be the next queen consort of England. She could be given the title of queen if Charles decides to do so.