Or do you mean that Newcomb's Problem is an impossible situation which doesn't approximate anything we might really face, and therefore we should stop worrying about it and move on?

This is my personal opinion, though I do not expect everyone to agree. I would go further and say that its connection to real situations is too tenuous to be valuable- many impossible scenarios are worth thinking about because they closely approximate real scenarios. The previous sentence- that any one explanation of why two-boxing or one-boxing is correct fails to understand why it's a problem- is something I expect everyone should agree with.