My kids have never had Kraft mac&cheese. Annie's was $1 a box at Kroger and had more variety.
They probably have, when visiting friends, and just didn't tell you about it.
Source: my Mom was neurotic about food stuff as well.
https://news.ycombinator.com/newsguidelines.html
Edit: We've had to ask you this surprisingly many times. I don't want to ban you, but after years of this I think it's reasonable to expect you to know the rules and follow them.
No, good for them -the kids, I mean.