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In hindsight, "the Xindi attack" was a phase change into a much more hard-boiled season of Enterprise.
(startrek.website)
They cranked it up way past 10, all the way to 24.
You mean the "justify American war crimes after 9-11" plot?
Ya they smeared the 9/11 on real thick. Blew my mind to learn they were ahead of the curve on the torture:
https://www.cbr.com/star-trek-enterprise-controversial-torture-scene/