[mothered]

I don't see how can they link my account if i use Gift C, fake name and a Locker and public wifi. Or maybe there is something i am missing?

I'm not suggesting they "can", but rather they "may"- even by device alone.

I'm not aware of precisely what you have/haven't done to anonymize your Identity, hence my post above to cover every angle.

The problem with the GC is if they close the account you lose the money. Not like if you paid with CC and you can still manage to get the refund by returning the item.

Every SE has Its downside, In this case losing funds on the GC due to the account's closure.

Though, Its benefits by far outweigh the negatives.