I mean, let's view this charitably. It makes total sense for a woman, who feels like she received misogynistic comments from men at her workplace, to have a poor opinion of the men there. I also don't know if it's really good faith to dismiss a woman saying something was misogynistic as subjective. Of course being a bigot is kind of subjective-- the bigot just thinks their prejudice is normal/true. I wouldn't trust any of the male scientists to say "no of course misogynistic comments didn't happen"; they're guys and, speaking as a guy, it's a blindspot for most men when they make women uncomfortable.

I also charitably don't think there's anything wrong with being suspicious of a very obvious lacking in racial diversity. Globally, white people are a minority of people, and they're likely not the overwhelming majority of all scientists even. So it would obviously be a statistical anomaly if only white people were on a specific research trip. [edited to add: a commenter below clairified this particular station is operated by the US, which is majority white, and scientists even moreso. I was assuming stations are operated with international cooperation :) ]