It doesn't make it less of a problem. But it shows how the specific laws in the USA are not the root cause of the problem. Change the culture, don't just overturn Citizens United.

Laws are (among other things) a reflection of culture. You can change the law and trigger culture changes.

As was shown during prohibition in the US. The challenge isn't changing the culture by legislation, that's easy. The challenge is changing it in a particular desired way.