Honestly, the bigger factor was probably Stacy Keibler being on Dancing With the Stars. She was getting the full "look we got one of our folks on a show with mainstream stars!" megapush until the celebrities there smartened her up to what it's like being a star outside of WWE, with actual benefits and standards and whatnot. As soon as that happened it became clear she wasn't going to go back to wrestling and all promotion came to a screeching halt. Ever since then, WWE has taken great pains to make sure they personally curate all exposure of their talent to the mainstream so they don't get to full of themselves.