Fraudulent to say the least

might not be the official one but the UI is the original Xkit one that's bigger and easier to navigate than the one on the new version

uninstall this now if you have it. it's not the official extension. get the one from github.

I could not even imagine using Tumblr without this.

Don't use this extension! Use the real X-Kit instead.

What are with the permissions required for this? Access all data? Unlimited amount of client side data stored?

Use the official version

I'm one of the developers of New XKit. This version is not official, and should not be used. There is no guarantee that our updates to the core addon will be published here, so please install New XKit from https://github.com/new-xkit/XKit/releases/latest for the latest features and security fixes.