Timmy's a bit weird too, thinking it was "so nice" standing by David while he was lying in his hammock. I can't fathom him out at all and if I didn't think I knew better, I'd say he had real problems.
David van Day however, is just vile and he makes my blood boil.
I think TM is like Tony Blackburn - he has forged a long and seriously lucrative career out of being a 'twit' - which is effectively a 'suit' he puts on for work, and probably bears little relationship to his life away from the TV.
Og course, right now, he is on TV, at work, so his 'work' personna will be on view - as you would expect.
I don;t watch the series, but I guess he would be stratospherically irritating to spend more than five minutes with while he has his 'TV' head on.