This has been May's strategy with parliament. We're soon going to have a third vote on the same deal.
With the referendum it's more justified. There were financial irregularities which would have rendered the result void but the vote was non binding so the Electoral Commission advised it can't intervene other than to fine some of the guilty.
That is literally how democracy is supposed to work. You have regular(ish) elections to appoint your "representatives" in parliament (representatives in scare quotes because they seldom represent the people).
Even the 2016 EU referendum wasn't the first we've had. As the voting populous grows old, new voters come of age, and the relationship with our EU partners change, it makes total sense to revisit past decisions.
Nothing in democracy should be closed to re-evaluation for all time in the future just because some people made a vote once.
If they have a 2nd petition I'm sure it'll include an option to say "I want to stay in the EU", which would be the same thing: repeating a vote until we get what we want.
Easily solved with instant runoff voting[1] for the entire spectrum from Remain to No Deal.
No one wastes their vote voting tactically, everyone gets their voice heard, and we get to choose exactly how we shoot ourselves in the foot when Leave wins a 2nd vote.
I mean how could Leave lose? It was the will of the people, they'll clearly vote the same again. /s
Better than the current game of 3d chicken we're playing right now.
So instead you advocate we don't get what we want because all decisions are meant to be final?
"I'm sorry, you cannot return this jumper you bought online because even though it doesn't fit you, you've already decided to buy it and all decisions are final".