Yeah, some things are a bit exagerated tho.
The Kyuhyun part was an advice coming from his own experience mostly after seeing SJ ending up with a variety image when they are singers. The Kim Yuna stuff is also blown a bit out of proportions as he mentioned the matter about their cyber world or something and people getting to worked up by it which lead to him having to talk about it multiple times.
The BoA part.. That I do not know much about and it was wrong on the point of replying to fans and stirring more problems.
Regarding the weight problem.. he didn't exactly say he hated them. And that Suzy thing..I don't really get it. Most idols when they have a comeback talk about having to lose weight and all, but others telling them that is wrong.
He made mistakes. Most were around 2010 cause the Radio Star thing is exaggerating stuff.
That's why now, looking back at how Teukkie was and who he is... I feel he grew up a lot. Not only military life but the death of people in his family, seem to have seriously made a change with him. He seems much calmer and mature now.