Its fake news
Doubtful, a ton of pictures of "sold out" theaters with 25 plus empty seats for multiple showings is fishy. It's not about it being a "woman" thing either, it's trying to change the perception that the movie had. Larson wasn't exactly the best PR rep for the film, she was creating controversy and taking attention away from the movie and putting it on herself. It was an MCU movie so it was going to do well regardless, they were just playing a PR game by doing it.