Seems to me they've accomplished quite a lot. I think you are assuming their idea of a goal matches your idea of an accomplishment (get a law supporting X passed/repealed). It isn't.

Their goal is to make our system dysfunctional by destroying people's trust in the information presented them.

It is what the Rand institute calls the "firehose of falsehood" https://www.rand.org/pubs/perspectives/PE198.html

And they have been very successful at it.