Read the excerpt from Anne Frank: The Diary of A Young Girl.

Friday, January 28, 1944

The various milkmen, grocers, and butchers of the two ex-housewives have already grown beards in our minds, so often have they been praised to the skies or pulled to pieces; it is impossible for anything in the conversation to be new or fresh

In the diary entry, what is the figurative meaning of "grown beards"?

aged

become obscure

become uninspiring

stopping shaving