McNabb, who said he attempted to reach out to Griffin last season, told the Post that Griffin's recent actions may start to become "a circus, a sideshow."
"It's too much right now; it's just too much," McNabb told the Washington Post from his Arizona home. "I get some of things he's doing to draw attention to himself: the adidas commercials, going out and enjoying the life of a young, famous NFL quarterback. I understand RG has a lot of stuff going on.
"But if you're coming off ACL surgery, you don't need to be having a press conference at OTAs. Every week? Really? It becomes a circus, a sideshow. It takes away from the focus of what those sessions are supposed to be about: the team."
McNabb said the added attention can be "counterproductive."
"One thing Andy Reid did is he never let the injured guys become the story if they were off to the side at practice," McNabb told the Post, referring to his former coach with the Philadelphia Eagles. "He thought it took away from the guys who were grinding and practicing every day.
"So when I look up on TV and see him up there talking all the time about how great he's doing -- or doing jumping jacks or someone else talking about his supernatural healing powers -- I wonder to myself: Is this about selling tickets to the fans or what?
"I don't blame him. They're letting him do it. But at some point, it can be counterproductive. You can set yourself up for more criticism later."