I don't think that follows, though no doubt whoever lost would continue to campaign for one. The 2016 vote was whether to leave or not. The proposed vote is on the shape of leaving, with the ability for people to say nothing being offered is good enough.   If they decide it is not good enough, we should not do it, but certainly you are free to argue that better is possible, and once you have come up with something to argue for a vote on it.

It seems that those who have consistently supported Remain believe that the alternative, should an agreement not be reached, is to remain in the EU.
Those who supported Brexit feel that if no 'good deal' (or acceptable deal) is offered then the alternative is that we leave without a deal.

Effectively, the two views above come down to something which was already decided in 2016. We are leaving the EU.