McBride has little time for the modern-day approach to rugby as a squad game.
"I'll be quite honest, that's one of the things that annoys me terribly," he added.
"We have changed rugby from a 15-man game into a 23-man game and that drives me crazy. They talk about bomb squads...absolute nonsense.
"I think we should get back to a 15-man game with reserves for injury only and I think we'd have a much better game."
In their most recent Test match, a dominant 73-0 victory over Wales, South Africa named Cobus Reinach as their only back on the bench, bringing on seven forwards across the contest.
Chief amongst McBride's concerns is the fear that bringing on an almost a fresh pack during a game will increase the risk of injury.
"It's just not fair," he said. "The chances of injury are so much more because you've fresh men against tired men.
"These guys that they rush on at the end are 25 stone probably, huge guys who couldn't play 80 minutes of rugby.
"That's unfair for a start. The whole game is wrong the way they've done this."