Marie Curie was regarded as an accomplished scientist by her contemporaries, and it is implausible that this high regard is explicable in terms of political correctness, given the time period. It might still be true that she was the least important member of the team that discovered radium, but the mere fact that a newspaper in 1906 described Pierre Curie as the discoverer of radium is not very good evidence for this.
Even if we grant that Pierre was primarily responsible for the discovery of radium, Marie should still be credited with the isolation of radium. She accomplished this four years after Pierre's death, and it is one of the accomplishments for which she received her second Nobel.
Today is Ada Lovelace Day, when STEM enthusiasts highlight the work of modern and historical women scientists, engineers, and mathematicians. If you run a blog, you may want to participate by posting about a woman in a STEM field whom you admire. But I'd love to have people share women scientists/mathematicians/authors in the comments that they think we could all stand to read more about.