Hearing many hates for AA. Your thoughts?

I have been watching posts of many good players getting commented "it's not skill it's just AA". I clearly doesn't understand the issue where AA is a bigger problem for some "pc players". I play with both K&M or controller (on pc). Both felt good. Can anyone tell me why people have the inability to accept both have different advantage and disadvantages? (on top of that console players hates pc players now regarding current cheating issues).

Where does this pc X console war ends?