![](https://lemmy.cringecollective.io/pictrs/image/e28e7924-e083-4a2d-bd23-9edd290033a4.png)
![](https://lemmy.ml/pictrs/image/h1ChnLuBHr.png)
uBlock is a content filter. Cookies are set when a server responds to a web (http/https) request. So if uBlock has a domain blocked, not only are any cookies blocked, but no requests make it to that domain (whatever.com) at all.
If a domain is not blocked by uBlock Origin’s filters, then cookies are set per your browser’s configuration. Firefox I believe blocks some 3rd party tracking cookies by default, but can be configured to block all third-party cookies as well, but this may break site functionality like single sign-on.
Don’t forget the best place to whistleblow and/or change the system is from within. Privacy minded people can better influence what policies and practices happen at a company when they work there.