Personally, I can't really be that judgemental of the artwork. Certain muppets are easier to draw than others. I can draw a beautifully accurate Sweedish Chef, but the "non-complex" Ernie is such a pain in the neck to get right.
And I still can't get Gonzo to NOT look like his baby counterpart.
And I still can't get Gonzo to NOT look like his baby counterpart.