Ohh i totally agree!!
i have a whizz bang high chair and it drives me insane!
I hate hate hate hate hate cleaning it!! lol!

but with that said, it does recline, which was good when DD started on solids as she couldn't quite sit up by herself without toppleing over. And now when my friend comes over with her newborn, i recline it, put a nice blanket in it, and the baby sits in it (up off the ground where DD would love to 'play' with her, haha).
so it definately has it advantages - just the cleaning side (very annoying!)