All the other sites that the extension asks for access are Google search sites in order for the extension to be able to work on the Google search (due to the feature that you can hide the images on Google search).
The extension does not collect any kind of user data. The user options are stored locally in the user's browser.
The access to googlevideo.com is needed in order to be able to block the video.
The access to i.ytimg.com, i1.ytimg.com, i9.ytimg.com, yt3.ggpht.com, lh3.googleusercontent.com, lh4.googleusercontent.com, ssl.gstatic.com is needed in order to be able to block all the YouTube images that come from all these sites.
All the other sites that the extension asks for access are Google search sites in order for the extension to be able to work on the Google search (due to the feature that you can hide the images on Google search).
The extension does not collect any kind of user data. The user options are stored locally in the user's browser.