Mostly on the appearance yes. Especially how I'm pretty sure they scrunch her face in a lot of those videos since her face looks different from appearance to appearance. Its very subtle changes but they are there. And I was also mocking how I personally didn't like her episode on the Simpsons. I don't know, I just feel she didn't emote as well as she should have in my opinion. The songs were all-right, but her straight up dialogue just sounded like she didn't care.I think he might also be referring to her videos which routinely use special effects to distort how she looks.
To say nothing of the pounds of makeup, wigs, and costume-er-ry.