Search Console matters because SEO work needs crawler evidence, not just page copy guesses. It gives builders a precise word for the thing they are changing, debugging, reviewing, or shipping.
ELI5
Think of Search Console as a proof or operations tool for the live product. It gives one small job a clear name so the whole app is easier to understand.
In practice
Use it when launch, analytics, revenue, reliability, or production proof matters. In practice, name the owner, input, output, failure mode, and proof before relying on Search Console.