Erasmus made the comment on Twitter in 2015 after receiving a late international call-up following the withdrawal of Tokelo Rantie for a 2017 AFCON qualifier with Gambia in Durban.
Mashaba never enlisted Erasmus again, but the France-based striker has received a recall from interim coach Owen da Gama for Bafana's upcoming friendlies with Guinea-Bissau and Angola.
When asked about the incident, Erasmus said: "Everybody has their own opinion on everything, their own take about the situation. I've my own opinion and that is why I raised my own opinion.
"Everyone has their own, so for me, like I said, it is all in the past and I'm here to focus on the present and try and structure the future, and make sure that it looks bright.
"I knew this question would come and it is one of the reasons why but things happen. It's part of the game, it's part of the profession and you got to deal with it."
Asked if taking to Twitter was the appropriate forum to air his views, Erasmus said: "It was my opinion and it's not about what everybody thinks. It's what I think about the whole situation and myself and being in it. So, like I said, it's not about the past and it's about me being here."
Meanwhile, the 26-year-old feels it is understandable that only six players in the Bafana squad were part of the team that reached the 2009 U-20 World Cup quarter-finals in Egypt.
"It was a good side but in football it happens. If you don't player regularly in your team for whatever reason and you get injured, these things happen," said the Rennes forward, who is currently on loan at second-tier outfit Lens.
"It's part of football. You cannot expect the exact same thing that happened in 2009 to be the same for the senior national team... it's impossible. Because there's very few of us still playing for our respective clubs at the professional level.
"And yes, it is sad that some didn't make it all the way and some of them are not playing anymore and that is a harsh reality. There is nothing you can do about it, you have just got to be thankful and grateful that those that are still playing are still playing, keep positive and never give up."
Bafana will host Guinea-Bissau in a friendly on Saturday at Durban's Moses Mabhida Stadium (15h00 kick-off).
Da Gama's men will play another friendly with Angola on Tuesday at Buffalo City Stadium in East London (19h00).