I hate it when news outlets and movie production companies focus on individuals and ignore the team effort and dynamic, and it's not because I care about distributing credit. I want them to tell more stories about teams and communities working together to build things, not more lone genius stories.
I get it. I truly do.
But consider the context: This picture of a blackhole is going around along with an iconic picture of a woman with a ton of hard-drives that resembles the iconic picture of Margaret Hamilton with a stack of papers. Put yourself in the shoes of someone who knows little to nothing about this project. What questions do you think people have?
Headlines have to create irresistible questions that lure people in and this one is using the tried and true "Who's this genius?" formula.
Once they've grabbed this casual reader (see headline), they're not going to dive too deep into the project. This isn't serious science journalism, this is a human interest story in the science section.
Why did they pick her? Because she lead the team and was a key figure in conceiving and implementing the algorithm. Because she was already the face, spokesperson and active promoter for this project. Look at her TED talk from 2017.
I get it. Tons of people deserve credit. More importantly, the story of how this team collaborated should be told. But that's not what this profile piece is about.
But let's get serious. You're critiquing the accuracy of a very casual profile piece for average readers. Most of them really don't care what statements are slightly hyperbolic, they just want to understand the gist of the project and her role.