what do you mean by doge coins being deleted, i can understand what you meant by lost. since it started as fun coin there might be cases that many have forgotten or simply ignored about their stash of doge. but i highly doubt people who are actively monitoring crypto currencies would loose their stash of coins.
it started as a joke and got where it is by tipping. i'll guess a bunch of people got tipped and didn't know or care what it was. i'm sure plenty of people still have it, but a bunch will have been sent off into oblivion.