Not sure why you'd say that. Theathlete I referred to with reduced aerobic capacity is 16 and very fit indeed.
Two examples from kids you coach? I say that because I suffered with pneumonia in 2017, am obviously much older than 16 and yet only last year recorded an excellent VO2 max for my age (according to Garmin). It is a fact that everyone reacts differently to Covid. Pogi may be effected but it is far more likely he won't be.