The statue that gets trashed is Danath Trollbane's one, not Khadgar's.

"Pubescent old man"? Lemme log on to my bank alt, Inígo and say,

"You keep using that word. I do not think it means what you think it means."

"Pubescent" may be more of an exaggeration than incorrect usage. Khadgar was only a teenager when he became Medivh's apprentice, and not long after that he was struck by a frailty spell/curse, giving him all of the physical effects of old age. So he's actually much, much younger than he appears. If the statue was built right after he killed Medivh, then he may have still been a teenager at that point. "Adolescent" would be a more literal description.

Thank you pokkets, I ment pubescence in the sense of teenage years, going through the rigors of hormonal changes. that can be considered between the age of 12-18 depending on any growth deficiencies/social impedements (Like being in a School of the Arcane from a young age.)

and yea, Medivh gave Khadgar the same situation that he awoke from when went into his coma. awakening an old man when he fell asleep a young fellow. The Statues would have been built after they went to the outlands, but the likelihood that the statue was based off his last known appearance, which yes, would have had him @ 17-18 years old.
Adolescent and oldman are both age based terms, where pubescense is a physiological one. it just seemed more appropriate.

Yea, I watched the Cata cinematic again cuz I recalled "Hey, didnt one of those fall anyways?" and yea, that was totally trollbane getting owned.