I think the problem with Kermit is that it's really easy to reduce him to a joyless jerk because his role IS being the straight man to a cast of bozos and he IS blunt and tired, but the thing is, he's not a jerk hes a funny little frog.
Kermit is not a jerk, Kermit represents the exact feeling you get when one of your posts reaches over 100k notes and people keep adding the same bad joke on the comments