Veering offtopif for a moment, the excuse to get Nimoy to the JJ timeline in 2009 was cringy too, and also fubared the entire plot of that movie.
But the nexus was worse. No, Nexus-Guinan was worse. No, Picard crying like a schoolgirl was worse. No, the emotion chip subplot was worse. No, the sfx shot of the klingon ship exploding was -aaaagh wat I am I doing to myself?