Whatever critics think of “Wahlburgers” — and they don’t think very much — there’s apparently an audience hungering for a show about the Wahlberg family’s hamburger restaurant. The new A&E reality show may have gotten a lukewarm reception from the arbiters of taste — Newsday’s Verne Gay declared that the show “doesn’t even remotely work as an unscripted series” — but it still did respectably in the ratings. In the critical 18-34 demographic, “Wahlburgers” was watched by an estimated 1.6 million people, and 3.3 million people overall. That was good enough to make it the third-highest-rated show on cable on Wednesday. Granted, the show benefited from airing after A&E’s “Duck Dynasty,” whose ratings nose-dived but remain significant. It’ll be interesting to see if people still watch “Wahlburgers” when they wise up to the fact that Paul Wahberg — not his famous brothers Donnie and Mark — get most of the screen time.