No shit. Did piroca try to blame someone/something else?
in "Victory by Effect Damage Only" you don't have to reduce enemy life to 0, its enough if you make him damage with a spell and he doesn't get damage from battles.
for example against LVL10 LD you can summon on the first turn a monster with 1700 ATK so he wont attack and make him damage with spell cards and than just wait to his deckout
It can't really just count graveyard or if it does it's a total screwup by konami as there are all kinds of weird destruction conditions such as returning to deck, extra deck (fusion deck pre-synchro era), remove from play etc.
Actually no... if an effect does not say destroy a monster or card and a monster or card is not destroyed by battle then it is not destroyed, banishing a card is not destroying, returning to the hand is not destroying, tributing for a ritual or fusion summon is not destroying... on a side note... IF IT DOES NOT GO TO THE GRAVEYARD IT IS NOT DESTROYED.