That's a problem with the definition of "STEM." It's a categorical grouping that doesn't reflect any real relationship. Building web applications is not even remotely related to writing research papers about microbes or subatomic particles. It's a completely different job market. When people say "there is a shortage of STEM graduates" they usually just mean CS graduates. But the journalists writing this are too non-technical to know the difference, so they try to refute this by pointing to statistics that show the US has plenty of STEM graduates. Too bad they're mostly biologists and not programmers!