Typical lr drivel from most of the rest. I suspect actually about 5 of the moronic replies are all from the same person using different names.
I have not one shred of doubt age cheats exist and, imo, the iaaf has no stomach to fight this battle. Just like they have no interest in telling the Chinese women that their absurd records are not actually valid.
If there is not reasonable certainty on ones age, they should not be in events with age limitations. Period. Beyond that, I could not care less if they have suspect ages or want to lie, or just make up numbers if they really don't know. But don't enter WYC or WJC unless you can provide acceptable evidence of your age.