They're literally flagging one "sanctioned" way to provide signal as an example in a resume advice post--how is that a waste of time? This lets people infer what other types of "optional" content might provide signal: publications, blog posts, etc. Transparency in the application process is fantastic and it's wild to me that people are upset about a company posting some ways that applicants can make themselves stand out. This is order of magnitudes better than VC, finance, etc.