I wanted to edit an article about an obscure religious group that included some blatantly wrong statements about the espoused ideology. They had an academic ter

I wanted to edit an article about an obscure religious group that included some blatantly wrong statements about the espoused ideology. They had an academic tertiary source making these claims extrapolated from reaearch by the same author that made both plausible claims but also included similar inferences. Being a very obscure group there aren't many other academic sources discussing it. All literature that could disprove these claims comes from non-academics affiliated with the group which are a no-go. As per Wikipedia rules (which took hours to figure out), there's not much one can do short of getting some impartial or friendly academic to publish a more reasonable article.