A tad harsh me thinks Ernest old boy. I simply don't think that he has the single minded desire and ruthlessness necessary to be a top class manager, I certainly wouldn't call him 'useless' though, after all he did a reasonable job at Watford last season.
I'm not sure that he has the hunger and self belief that is necessary to be a successful manager here, certainly not in the Premier League. He failed at West Ham too remember.
He seems to be a nice guy though, and l wish him all the best.