[soundnote]

It's not. They do the usual of defaulting to a not privacy friendly search engine and having search suggestions on, but Edge's session id is hardware-based and persists across browser reboots. Their new tab page also connects to two million different things.

Microsoft does run its own sync infrastructure, but Edge doesn't provide end to end encryption for all classes of data.

If you want a privacy friendly Chromium fork, I'd go with Vivaldi or Brave. Both run their own sync infrastructure, and like Mozilla's theirs are end to end encrypted by default. They have their own built-in adblockers and prefer privacy-friendly search engines. Brave Shields even does the CNAME uncloaking that makes uBlock Origin better on Firefox. And it won't get fucked by Manifest v3.

I probably don't need to advertise the joys of adblock on mobile, or Brave having a funny little toggle called "Background video playback" (read: "Fuck YouTube").