YABU - he's a radical, an artist & he's a creator. The world needs radicals & artists - he's not ment to be Mr Ordinary or Mr Oliver. It's not a 'how to cook' show - it's an artistic show. And he does have a great sense of fun & wonder, plus he's a scientist.
If you don't like it don't watch it! (I don't find his shows that interesting anymore but when he made the perfect black forest gateau years ago I was very impressed - not that I'm ever going to make it).
If you just want to grill a sausage or roast a chicken why watch any tv chef? Probably for entertainment, not because you're going to cook the food.
If you want him to stop he will - all you have to do is switch it off.