Until the end of the year, I have superpowers too and feel free to write stuff like "just afma your lens" or "if your 6d's af doesn't work just fine, you're not up to the task" instead of trying to present a differentiated opinion :->
I recently got a 7D2 and was not very impressed with the images.... The AF did not work "just fine" (obviously I was not up to the task
). I had to resort to RTFM and playing with settings before it started to get acceptable... and then I AFMA'd my lenses and after that, WOW!
One of the problem with complex systems is that there are a lot of variables to get right. When one jumps from a 9 point AF system, (that really only worked on the centre point), to a 7D2, there is a steep learning curve. I know many of us expect things to be perfect out of the box, but the reality is that most of us need to put in some time and effort to understand and get used to a new system. It's not knocking people, it's just the process that some of use go through when learning.
I think that most of the people on this forum try to be helpful. There are some obvious exceptions, but most are trying to help. For many, it is in a second language so the wording may be a bit imprecise, but who cares? ... They are trying and their heart is in the right place, so THANK YOU!!!!! to all who try.