The example in Sūrat Hūd can be traced as a sequence:
StepExpression or implied meaning
Prior clue«وَلَا تُخَاطِبْنِي فِي الَّذِينَ ظَلَمُوا»
Unspoken questionWhat will happen to them?
Emphatic response«إِنَّهُمْ مُغْرَقُونَ»
The prior statement gives the reason for the reclassification. Removing that clue would conceal why the next statement is suitably emphatic. In rhetoric, utterances are read in their connected context.