I think there may be a disconnect in this conversation around a couple of points: 1) different views around misinformation about things like natural food are not a big deal, and 2) political misinformation has become a big deal
You rightfully defended #1. The parent you replied to is rightfully concerned about #2. The article said that sometimes #1 ends up leading to #2.
I don't think that anyone is saying #1 is equivalent to #2.