She abuses an information asymmetry and social conventions. Scientific discourse is usually conducted in academic papers, for better or worse this is how the community conducts itself. When she criticizes others work or the usefulness of the fields outside this channel she is addressing as a singular voice the general public. Which gives her voice an outsized presence with a public that is not prepared to engage on equal terms on that discourse or prepare any rebuttal. Meanwhile the rest of the physics community looks dumbfounded because she is escaping the typical means of discourse and ratting them out to the general public, that can´t really make an informed judgement.

Either she is socially clueless on how this can be seen negatively by the rest of the scientific community or she is malicious in her attempts to defund parts of science she believes shouldn't get funding.