I guess it is just a fanboy thing. I've played the game before. 1-5. And Even in five I was able to button mash my way through the game. They often say that Tekken is a button masher but, being a tekken fan, I know that every character is different and some require more skill to be able to master. Characters like Hwoarang, Lee Chaolon, and Eddy Gordo are perfect examples of characters that don't require as much skill. Other characters like Craig Marduk and Yoshimitsu have much more advanced move and may require some time to get used to.
Some may say that Yoshimitsu is Button Masher character but may have never used him. I am often told that I am button mashing when using this character but it is not always what is happening.