Are TV ads too diverse now so not realistic ?

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Interesting debate over here in the U.K in the overrepresentation of black and Asian people in TV advertising and commercials. A far right Member of Parliament did not like this and said 'there were way too many of them in the ads'. Black people are in 51% of the adverts now in the U.K but only 4% of the U.K population whereas Asians are in 18% of the adverts but just 6% of the population. Older people managed just 4% of adverts and disabled people even less. I have never seen a Dwarf or a Midget lately in one . Clearly companies are reticent to have disabled, old and ugly people trying to advertise their products and so they dont. They dont want fat people in ads eating products that make you fat. They want attractive thin people or ordinary people eating cakes. But why so many black people? The answer is they want to normalise British families as mixed race so black people will buy what the white folks do. But the real sin is they are in subservient roles to make white people look more important. I've also noticed they dare not risk a mixed race Muslim and African Family etc. KFC were sanctioned here for having too many urban black kids in the chicken adverts so KFC responded with that awful advert series of Worship the Chicken ones , which had less stereotypes in it, lets say. Fast food ads seem to be the most diverse here. When TV came about in the 1960s and 70s there were obviously very few faces of colour in TV adverts but it became representative in the 80s and 90s. Thoughts ? I guess it's the same in the U.S.