Dark Necrofear can also be negated by
Royal Oppression, and it would be considered "destroyed". Is this an illegal squeezing? And if it is not, do you believe that the ONLY reason that this is different is because Konami Said So?
But then, did Konami say so?
Logic of questionable assumptions. Faulty.
As I've REPEATEDLY stated, the card has hit the field. The game simply forgets that when its summon is negated. Just like it forgets that a magic card was activated when its activation is negated (
Magic Jammer VS magic counters, if I remember correctly).
When you summon a monster, the proper procedure isn't to show the card to your opponent and ask if he wants to negate your summon. You place the card on the field, and THEN ask if he wants to negate the summon.