First they need to look at your application / resume.

Then they need to have questions, which triggers curiosity that has them looking for more.

Only then does having a piece of content help you.

Yes it helps, but it doesn't help as much as having a resume that suggests you're a potentially good match without oversharing why you're not a good match. A good resume raises questions that leads to a conversation.

The resume matters more... but if all else is equal and candidates you're competing against also have great resumes, then content matters. You'd be very surprised at the lack of great resumes though.