Right, but this article isn't about pedagogy. Whether math is taught "properly" or "improperly" in a given school, district or country, teachers of all subjects are engaged daily in persuading students to persevere when they encounter challenge.

This article is about how that effort can be especially frustrated in math because it's so common for parents (or other influential adults) to deal with the ego threat of not having been successful in their math class by announcing a strange pride in that fact. The message that can be conveyed when someone influential to children says "I never understood anything in mathbutInever had to use the quadratic formula in my life lol" is that math class doesn't really matter so who cares why try if it feels hard.