That may be the case, although, from my experience running Junior football in Middles e x* through the 1980s, there were lots of immigrant children who were playing at age levels which were very debatable to say the least.
On making a lot of enquiries it turned out that many of them were not registered at birth, this was only done when it became convenient!
Naturally, things have probably changed now with better communication, however, I can't confirm that.