I discovered Knize Ten when I was in my mid-twenties (back in the early '80s), and used to wear both it and Knize Two frequently. Both were then among my favorite fragrances.
I've always been very independent and never cared about blending in or following my peers. I also didn't mind presenting myself as being mature vs. still being a kid. And back then there wasn't the divide between "old man" fragrances and "youthful" frangrances. All that came later, in the '90s. In the '80s fragrances were just fragrances, and about the only things available anyway were what are now considered "old man" fragrances.
IMO young people today tend to cling to their youth rather than grow up, and that includes which fragrances they wear. There also seems to be more peer pressure now to conform to a particular group than there used to be, and group members are very critical of those who wish to be different.
So I would say wear it if you are comfortable with it, and don't wear it if you are not. I never cared if others liked my fragrances or not. I wore them, and still wear them, because I like them.
Knize Ten is a beautiful, classic, elegant, manly fragrance. It would be a shame to deprive yourself of wearing such a wonderful fragrance because of peer pressure or insecurity, but if you not comfortable with it find something else more suitable. You have to decide this for yourself.
BTW, both Knize Ten and Knize Two, while still recognizable, have changed considerably since the early '80s.