A New York Times article about a Conde Nast editor-turned-L.A. maitre d refers to "Jeffrey Klein, the young hotelier behind the Sunset Tower."
A January 2017 article about Mr. Klein elsewhere on the internet said he was 48, and a 2011 New York Times report on his commitment ceremony put his age then at 41.
I'm in my 40s myself, so I can't really, in good conscience, personally complain about the Times characterizing Klein as "young." Times readers in their teens, 20s, or 30s, however, might be skeptical about the description of someone in his late 40s as "young." In general, in situations such as this, the Times would be better off just giving someone's age rather than characterizing the person as old or young.