NLERS seems a crosswords invention. As a rabid baseball fan I never see the term used. RVERS is used in the real world, however.
It is, I suppose, a pet peeve, of which I have a few. ACER is one, when it is used to describe a tennis player --- sports writers don't use the term. And as you have probably gleaned, I don't like most foreign words, though TETE in today's puzzle is fine since we use the term in English (tete a tete).