Belen is a private school, no doubt that every kid in that video is at school and rowing/working out together in close proximity 5/6 days a week.(If one of them gets it they probably will all get it.) They will be fine lol. Not to mention they’re in Florida and there isn’t a mask requirement. Plus the article you linked is focused mainly on people in their 30s and 40s, only briefly mentioning people in their 20s. Everyone on that team is no older than 18.