First- this forum never had any good info. Second- no birth year sports allow kids to play down. It is called BIRTH YEAR for a reason.
That is way too logical and factual for the Dad's long winded post. He is upset his son is as unathletic as he was and will continue to scour the internet for studies that explain why his boy is much better at minecraft than lax. Let your son enjoy robotics club, don't try and make him something he is not and embarrass him by trying to come up with excuses to explain his lack of success on the field.
Robotics club can get you into a D1 school, too. Not sure why being an athlete is any better than being smart. Hopefully the kid is good at lacrosse AND in the robotics club. I hope your son is more progressive than you. Maybe he’ll have a chance of making a positive difference instead of spewing detest. Good luck to your son. Hope he rises above.