Doesn't matter what you think.

The law is quite specific, whether you agree with it or not.
All birds are protected but you may shoot some listed species PROVIDED you comply with the requirements of the General Licence that is applicable.

Having feeders means that you cannot comply with any of the Licences. You could say that you are enticing the Magpies in so you are responsible for the deaths of the songbirds.

Get rid of the feeders and you can shoot as many as you can and at the same time comply with the General Licences.

ATB
Ray.