View Rewrite results Inline CSS for Newletter
I've been looking into this problem myself for several days, and my conclusion after going through the views code is that views is absolutely dead-set on sanitizing certain data (specifically twig template fields for custom field rewriting) not even writing your own templates can fix that.

Ultimately, my work around for this was to use Display Suite to build a custom display for my node type (which lets me use tokens in custom display suite fields) and then telling views setting up views to output Display Suite content instead of Fields.