Most interns and industry veterans don't write wordpress plugins either ;-)
The point is that you can learn enough of the basics to do useful things in 3 months with minimal prior experience.
Working with petabytes of data isn't a "hard" problem like it was 10 years ago. IDK how large PACER is, and I'm not suggesting that an intern could implement a new system, but $x0,000,000 and a decade of lead time is at least an order of magnitude off.
...is it, though? It's fucking 2021. Interns play with petabytes. Literally.
CRUD on massive datasets is not a hard problem anymore. Or, at least, isn't eight digits and 10 years hard.