Stick my neck out time............
Buzzards are very successful predators, whilst the eco-system can probably stand the current level of population any more and other species begin to suffer.
They don't only target pheasants, this article is playing on the false perception that 'toffs' are protecting their sport - there is an inbuilt antipathy in the now political RSPB against shooting and they seize every opportunity to milk public sentiment. Partridge and all other ground nesting birds are also at risk as well as the small cute mammals we all love.
I love buzzards, I like watching them and would hate to see them reduced to the level they were previously but I also love songbirds small mammals and gamebirds.
I have a house in rural France where, I can virtually guarantee that if I drive to one of the neighbouring villages the vast majorityof birds I will see are corvids and buzzards.
Do you want that situation to arise in the UK?