People always get confused with "different people who are different ages at the same time" with "the same cohort which changes in age at different times". Also my explanation was not the best even if it caught some essential features.
I'm not saying that those boys are in competition with 30 year old men, but that those same boys are going to be in a materially better situation when they are 30 years old -- yet they might not be able to take advantage of it because they will still have that deprived and resentful little boy inside.
The median teen is interested in teens.