I realise that this thread is a year old, but it's been resurrected and the questions and issues are still just as relevant
My 3yo also has penile phimosis. His paediatrician thought he would need a circumcision but the specialist is happy to wait.
It is very common that this problem rights itself at puberty.
I'd listen to the specialist and strongly consider getting a different paediatrician. It's astonishing how many people don't understand the basic facts - even a lot of medical specialists - and make pronouncements based on their ignorance.
It isn't a 'problem' that 'rights itself' at puberty any more than the fact that your 3yo daughter doesn't yet have breasts or periods is a 'problem' - it's an entirely normal part of child development.
If anybody seeks medical help because their 3yo son's penis is like a normal 3yo's penis, they may as well also seek urgent treatment for the 'problem' that he isn't yet very tall - alarmingly, nowhere near a normal height for an adult.
Circumcision is very hygienic and healthy.
Exactly the same arguments are made for FGM. Technically, one could argue that the fewer folds, flaps or coverings there are, the easier it is to keep clean and thus the more hygienic it is. Nobody in their right mind would advocate this for girls on that basis; why is it different for boys?
If it's that crucial, why not get your eyelids surgically removed to make it easier to access your eyes in order to clean them?