My extension has been under review for 4 months now, and in those 4 months I've gotten 31 000 chrome users and 17 000 firefox users and I and others would like to use it on Opera as well.

Chrome webstore: https://chrome.google.com/webstore/detail/i-still-dont-care-about-c/edibdbjcniadpccecjdfdjjppcpchdlm?hl=en-GB
Firefox: https://addons.mozilla.org/en-US/firefox/addon/istilldontcareaboutcookies/
Edge: https://microsoftedge.microsoft.com/addons/detail/i-still-dont-care-about-/kkacdgacpkediooahopgcbdahlpipheh
Opera id: lmnkpnadeedkkcbehnbfinlblifgmidf