The tonsils & adenoids do grow faster than the kids do until the age of 8, with some additive effects due to infection.
Some will need tonsils & adenoids removed due to sleep
disturbances or chronic infection
. In most, the t&a growth stops @ 8 or so but the kid continues to grow & the relative t&a size declines. By adulthood their relative size is similar to that at birth & no problems remain.