How would any website or application these days work _without_ full-blown analytics tracking the hell out of every user?
You can still argue you don't want your data sent to them, and that's very fair, but the only way this helps their business model is if their business model is "provide really good, tailored customer support."
Anyone know and marketing firms that are privacy aware/friendly?
For example, a content firm wouldn't need user data to write a blogpost for your company, but they would need some sort of event tracking to measure how many signups came from users who discovered your company via the blogpost.
Figuring out a way to setup attribution and basic event tracking without being invasive or sharing user data with third parties would probably make it easier to find a firm.