DIsagree one million percent. There were fewer openings because of Palmers positioning, but Metcalf's whole (underrated) game was that he wasn't just shooting to shoot, he was getting people out of position and then shooting. Often the people weren't out of position for very long, which most guys wouldn't shoot on at all, but Metcalf did. He rarely shot on a guy just to shoot.
And the only time you could call him somewhat conservative against Palmer would be their final match, which Metcalf got in on a shot in the first 5 seconds, and outshot Palmer over the course of the match 7-3, scored the only takedown and was the only one close to a second takedown. He was still pushing and going forward and pulling the majority of the match, just not shooting as much as he usually did against Palmer due to Palmer's own positioning and strength.