have you tried Koalament? it requires no permission at all!…

have you tried Koalament? it requires no permission at all! Comment on any URL, the cost is close to zero!
https://chrome.google.com/webstore/detail/koalament/igecidcneciljgfkimafpbhkhmekadea
https://addons.mozilla.org/en-US/firefox/addon/koalament/