This says more about your tastes than your understanding of Hollywood.
Ms. Waller-Bridge wrote 2 critically acclaimed TV shows which were hits for their respective distributors: Fleabag (an Amazon Video launch series), and Killing Eve (BBC). She also wrote several smaller series for the BBC, and co-wrote No Time to Die, and provided uncredited rewrites for Solo, Indiana Jones 5, and is currently working on another TV show for Amazon.
For her work on both Fleabag and Killing Eve, she was nominated for outstanding writing by her peers (and won for Killing Eve). Taking into account the number of episodes she wrote for both of these series, she actually has more writing credits than her 3 credited NTTD co-writers.
doesn't have a story credit unlike the other three writers
A story credit is given to a writer that participated in writing the treatment for the film (i.e., the outline), in situations where a treatment is drafted before the script itself is written. A story credit is a lesser credit in Hollywood. Where there is overlap between the story by and screenplay by credits, it means that the original writers' first draft(s) weren't filmable and another writer had to be brought into salvage the script. Some writers will re-write enough things to get sole credit for the final script; others, like PWB, will make just the changes necessary to get it across the finish while still letting the original screenwriters get credited for their contributions.