The "browsingActivity" permission is exclusively used to transmit your user presence on Twitch/Kick, so that your cosmetics show up in chat. This has always been the case in all our extensions, but the consent screen is part of a newer Firefox initiative: https://blog.mozilla.org/addons/2025/10/23/data-collection-consent-changes-for-new-firefox-extensions/
We have contacted Mozilla to see if there is anything we can do to make it clear we only transmit user presence on Twitch/Kick and nothing else.