How Do You Combat Youth Development?

I'm always intrigued as to how different people see it so if we think about sports where we may not get to use all the information stuff we think about rugby particularly at an elite level with the contact. No one really wants to be smashed by 120 kg human so that is going to shape how we move but in training we can't afford to have our players being smashed by 120 k humans because we wouldn't be able to field a team. How do we combat that without stalling like youth development? Yeah no it was quite uh interesting and like kind of it depends on the sport so like I wouldn't have too much um too much experience in rugby but like it well came to my head