NPCs refering to our character's age

[Enur]

The young might be a reference to your time spent on a certain profession. While my Hellsguard looks well up in his fifties he is a "young" carpenter.

Or the localisation team made it that way due to the "Young hero" trope.

[Zojha]

Or the localisation team made it that way due to the "Young hero" trope.

Pretty sure it's more along these lines - they expect you to be young. And appearance-wise, they're right 99 times out of 100, because we don't have a great many "old" options. I consider the few who use the old options "collateral damage" of that.