Saying someone is good looking enough for sex isn't "sexual objectification". He just chose a bit awkward way of pointing out she's beautiful. Not creepy, although probably crude and/or primitive. Personally, I applaude him for that, I favor freedom of expression to political correctness. But I do understand how others would be appalled.
What's wrong with being attracted to young women (his daughter is no longer a "girl" in any sense of the word)?