Blocking cookies by itself will not do anything against tracking, nor will it remove the need for consent prompts because they still need consent for the aforementioned non-cookie tracking methods.
Similar to the real-world, there are a lot of things that can be used for good as well as for evil. A car can be used for transportation but can also be used to run people over; this doesn't mean we're just going to ban all cars or make them non-functional because otherwise some people might use them to hurt others - we rely on laws to prevent misuse instead.
