And, you can also change the narrative yourself, by leading the public. Public pressure absolutely moves politicians. Sitting around waiting for others to take this seriously is failing. Making something the story and making the public care about it is the job of a politician.
IMO the argument is that you can make things into big enough deals that it matters. Khanna found Massey and found survivors and made the Epstein Files the gigantic story it should be. Only then did establishment Dems come along. You can, in fact, make things into big hairy deals if you do it right.