What? I don't care who gets hired. But when hiring at scale, if a candidate can't follow instructions, they don't get hired. It's a basic filter that is necessary when that many people are being considered.

How many tens of thousands of university kids go through the hiring pipeline at Facebook each semester?

When you are doing things at that scale, you need well-defined processes. The process here was we need you to put exactly what this position requires on your resume, probably because the resume needed to be OKd by some keyword-checking system.

The candidate either was incapable of or refused to follow the process. Therefore, no hire.