The USGA declined to respond to requests from Press Association Sport for a response to Poulter's criticism, but former Ryder Cup player and Fox Sports commentator Brad Faxon was not so reticent.
"Poulter's kind of a t*** when he does stuff like that," Faxon told Boston's WEEI sports talk radio.
"The commissioner on the PGA Tour is a guy named Tim Finchem. Years ago, Finchem said something to us that I really believe makes sense.
"He said, 'A spectator at home doesn't care if you don't like a golf course or like the conditions.' The average guy is sitting there watching the US Open.
"The views are spectacular. We're out here in Puget Sound. You're seeing this unbelievable links-style golf course. Everyone would like to come out here and play a round of golf.
"And you're whining about these greens being bad when everybody has to play those same greens on those same holes.
"I get it. The greens weren't perfect. Everyone was saying things about that, even the USGA said, 'The grass just hasn't grown in like we wanted it to.'
"The guy that wins, Jordan Spieth, said the least about it, didn't he? You didn't hear Jordan Spieth saying, 'These greens are bad.' I think you just kind of need to shut up."
They said golf had never seen anything like Chambers Bay before. Well, golf had never seen anything like this climax before, as Jordan Spieth was gifted the US Open when Dustin Johnson three-putted from 12 feet on the final hole.