No, they won't stop you from eating cookies. However, it will help prevent sites from tracking you while you browse throughout the internet.

Privacy recently has been in the news more recently and consumers are now taking it more into account when signing up for services. So why is is "Total Cookie Protection" so important/useful? Well as mentioned, it prevents sites from cross-tracking you. So if you got from site A to site B, then site B wouldn't be able to potentially identify that you were on site A.

The way that firefox is doing this is by, generating a new identifier (id) on each site. The best real-world example is when you sign up for free trials over and over again with a new email account.

Essentially you have a "new" identity and that's what firefox is doing behind the scenes now. This helps in privacy by not having trackers track you without your permission. Overall, Firefox is trying to reclaim the title of best "privacy-focused" browser that the Brave browser arguably has right now. Hopefully, this pushes both browsers to innovate more for the privacy of the users.