From a quick read of the 3 links, this 'problem' has existed for a long time, it's part of the tolerance of the lens and camera and are both fine according to the different manufacturers specification. So nothing to worry about... I guess people 'see' it more due to the higher resolution of the sensors.
True I could go take pictures, but since I wasn't born with a camera glue to my face it happens that I do read and I do like to understand what I'm reading and be able to judge if the content has any importance at all. With your help, I found out it didn't! Though that research brought me knowledge and now I can go take pictures without using what I have learned today
Thank you all