That’s not saying writing isn’t important. I don’t think I understand a subject unless I can teach it, explain it and argue both sides about why you should and shouldn’t use it.
If I were going to go into independent consulting as oppose to working for consulting companies, I might start a blog a year ahead of time. But it wouldn’t be for discovery. Leveraging and improving my network would be the first strategy and then direct people to it once they knew me.