At least as far as the first video, I think the quality of it has a lot to do with the fact that it's the state championship game and it's being played in Aloha Stadium. St. Louis plays in the ILH and that league consists of all private schools. None of them have football stadiums on their campuses...all of their games are played at Aloha Stadium. Kahuku is the other team and they are a public school and play in the OIA. The state championship pits the top private school (ILH) vs the top public school (OIA).
The guy who does that video does a lot of officiating videos for Hawai'i high school football, but if all of the private school games are at Aloha Stadium then that helps to explain why the film quality is consistently excellent. They always get multiple high angles in a college facility.
The idea is when the ball pops up there's a mad dash of players trying to get under it and injuries are likely to occur. I don't recall seeing hurt this way, but I haven't reffed football in 7 years.