The FA upheld Rooney’s two-match suspension for swearing after United appealed against the severity of the ban, arguing the punishment did not fit the crime.
Giggs said everyone at United was stunned by the FA’s decision to punish Rooney for his foul-mouthed outburst and suggested he had been singled out simply because of his profile.
“I’m not surprised [by the ban] because of the profile Wayne has got,” said Giggs. “But a two-match ban? Yeah, I’m surprised about that.
“It had just never been done before [a player being charged for swearing]. There was no precedent for it and that’s why we were bamboozled by it.
“But it’s one of those things, you’ve just got to get on with it. Obviously we’ll lose him for two games but he’ll be back against Chelsea next Tuesday.
“We can moan about it, but we’ve got too many games coming up to dwell on it.”
Asked if such episodes, like Sir Alex Ferguson’s five-match touchline ban, served to unify United’s squad and increase their desire, Giggs said: “Maybe it does. But a lot more is made of it away from the club.
“We’re in the changing-room as players and we just want to concentrate on football.
“That’s where experience of the staff and the older players, and the manager of course, comes in.”