Browser extension rights - overkill or necessity?

Question

Browsers

Does the extension really need such a set of rights to perform its functions or, as usual, for surveillance?
How to interpret the requested permissions?
Where can you read?

Answer 1

If I'm not confusing anything, then the full list of requested permissions is as follows:

"permissions": [
        "contextMenus",
        "privacy",
        "storage",
        "tabs",
        "unlimitedStorage",
        "webNavigation",
        "webRequest",
        "webRequestBlocking",
        "<all_urls>"
    ],

( source )
Permission lists with description: https://developer.chrome.com/apps/declare_permissions
https://developer.chrome.com/apps/permissions#manifest

Answer 2

rights are requested by the site / server, and ublock, depending on your settings,
either passes this information to it or not