That's simply not true.
> They say that the EU law says: "Defects present when customer takes delivery".
And that's what EU law says, although several countries have gone further in their local implementation of it.
> If I hard drive breaks on the 15th month, is my fault or Apple's? If the battery drains too quickly? If the screen starts doing faulty things?
Apple's if it breaks during normal use, yours if it's due to abnormal use.
> They have enough margin not to be cheap about that and making European customers angry.
What you mean is that some wrongly informed people are angry after reading some biased press articles and are taking sides in a supposed 'Apple VS EU' battle - the big mean corporation against the little consumer.
If you ever have this problem, take it to small claims court and it will get sorted in no time. Caveat emptor.