The Bafana Bafana international is currently plying his trade with the National First Division outfit in order to gain regular first-team football, with a view to eventually returning to the Buccaneers ready for action.
With that in mind, Mthethwa hopes to make the most of his time in Richards Bay as he looks ahead towards a promising career in South Africa's PSL.
“I’ve changed a lot, and definitely grown as a player. I don’t see myself as a kid anymore," he told the official Orlando Pirates website.
"The intensity of training and focus has meant that I need to be more aware of what’s happening and pay more attention.
"Being on loan and in the NFD is perfect preparation for what will happen when you are playing in the PSL and in the first team. Nobody is going to hold your hand and massage your feelings here. It’s a man’s game and you have to get tough really quickly."
He continued: “I’m also learning to control my aggression, which is key for a defender. It’s not to say that you must be soft, because a striker must know that you are there when he faces you.
"So channeling that aggression is very important, knowing when to be hard and knowing when to make the correct challenges makes a big difference.
"When you are reckless in your approach you put yourself, the opponent and your team in danger. There’s no place in football for recklessness.”