As a youth football from 5 years old in the 90s to high school in 00s in the Midwest, this is not surprising at all. Things are competitive from a young age. We more recently know much better, but this knowledge. The taught knowledge was protecting one’s neck from injury with “proper” form. From my lived experience at those times, there was 0 mention of head injuries, and blacking out and dizziness after hits were ignored by all if you were able to stand or walk within a short period of time.