Thousand Plateaus was extremely poetic but its contents can be converted into more straightforward ideas like deterritorialisation and schizoanalysis. Poetry is just the delivery mechanism.
Also Deleuze is an example of a philosopher who has both done poetic and analytic work (including metaphysics, which is a core analytic discipline) but is generally considered a continental philosopher. I don't think the distinction matters - both "sides" just explore different philosophical topics. I enjoy both of them and the divide seems petty.
If anything, the places where continental philosophy flourished have less of this "turning the western world upside down" than the excesses in US academia (when they don't criticize them) - and some excesses of it they do share, they import them (due to US pop/social/etc culture pressure), not export them.
Well, according to us continentals, who, if not invented, highly developed the thing for 2500+ years (both philosophy and analytic philosophy, it's west-adopted spinoff), analytic philosophy is not philosophy either.
It's more of a technical than a philosophical field, or, if you wish, it's a specific philosophical application of logic, math, and co. that mistook itself for the essense of philosophy.
>what poetry does is defamiliarize language. It's impact is emotional. It isn't philosophy
That's not some general truth - just an specific school/idea idea about poetry's function.
Aristotle, for example, considered poetry more philosophical than history - because it captures the essential and distills it rather than bundle a development with the non-essential, random, and contingent (as history does).