Sturtevant: Double Trouble @ MoMA, Don't Trouble Yourself

Elaine Sturtevant who passed away earlier this year at age 89, was an artist known for imitating the works of other great artists.  In this exhibit there are her works that replicate the styles of Duchamp, Johns, Warhol and contemporary artists such as Gober and Gonzalez-Torres.  She is credited with promoting or getting larger audiences familiar with famous artists & with adopting their techniques.  My question is why is she acclaimed for what other's would claim as plagiarism.  Instead of going to Double Trouble - or as I call it Copy Cat art, see Robert Gober's original works now in a major show @ the MoMA.  Don't trouble yourself to see art redux that isn't new.