Nah, I won't say that. For Lin Dan, it's all a motivation problem. If he didn't allow it, none of those chaps, with the exception of Chen Long perhaps,would have a chance to beat him. Ask Peter Gade.
Lin Dan is getting old, the average level of badminton is rising, and he's finding it harder to win. Nothing wrong with that. It's just natural. You haven't been following sports for very long if you think it's just Lin Dan "letting" opponents win.
Wang Zhengming has the tools but just lacks the will and determination to go all the way, such a pity.
it's sad to see that the state of thailand MS is the same as neighbouring malaysia. with only veterans to rely on. they had much promise in tanongsak but up till now, he's been more off than on.