Smith, who won the Sony Open in Hawaii last weekend, was one of a number of PGA Tour players and analysts to speak out about the incident in the Bahamas where Reed was docked two strokes for improving his lie in a waste bunker.
Few comments were as vocal as the Australian's, who said a week after the infraction took place: "If you make a mistake maybe once, you could understand but to give a bit of a bulls*** response like camera angle, that's pretty up there (inexcusable)."
Reed claimed he did not intentionally go about improving his lie in the sand, and explained it was the position of the camera angle that made it look worse.
The American strongly denied all wrongdoing over the matter despite numerous golf fans and critics on social media labelling the former Masters champion a "cheat."
Smith's comments appeared to boil over during the Presidents Cup as Reed brushed shoulders with the Australian, an altercation that was later described by those on the scene as a "love tap".
For much of the week at the Presidents Cup, Reed was heckled and jeered on just about every hole he played. Reed's caddie even got thrown out of the tournament for squaring up to a fan who was shouting comments against Reed.
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According to reports, Smith has since been warned by the PGA Tour and has been told that he will face a fine should he make a similar statement in the future.
"According to a source, an official from the PGA Tour spoke to Smith about the remarks, essentially issuing a warning that he would be fined in the future if he made similar statements," reads a report in Australia Golf Digest.