Robert's return was badly written, but it was consistent with the story in 1991-92. Robert told Mac that, even if he got Anna away from Faison, they probably would have to hide from the WSB. It wasn't hard to believe that the WSB extracted a high price for allowing Anna to live. That's why Sean told Robert to cut his losses rather than go after her.
Robert didn't leave in 1992 for kicks. He left to bring Robin's mother back. And clearly thought he was likely to die while trying.
If Robin wants to dump on him for the decisions he made, she also should dump on her mother. The double agent who never told the truth about Faison, who brought Faison AND the WSB down on Robert's head, and whose terrible choices are still affecting the people around her.
And since I'm giving my unpopular opinions (I probably should add this one to the thread for them), I didn't care much for NS II. It continued the Robert is a deadbeat, Robert couldn't commit, Robert left in 1992 for fun times with the WSB stuff from Guza. And Anna being a double agent was played off as a joke.
But I guess it was better than monkey virus or the Markham Islands garbage. Low bar, lol.