Explanation of the new permissions added by the downloader (Patreon)

The downloader will use the permissions provided by the browser to modify its own network requests to avoid cross-domain problems. Since the downloader has been upgraded to Manifest V3, the previous permission is no longer available, so the new permission declarativeNetRequest is used.

The browser will alert you to this, and you don't need to worry, because what the downloader does has not changed from before.