If you do what I do, live in my general area and know the right people (which I do), LinkedIn will get you an interview or three lined up in a day or two. None of these people are on Indeed, HackerNews or even Slack.
Most of LinkedIn is just garbage though, especially if you somehow connected with social-media people or marketing people. Marketing people on LinkedIn are weird, they can't form coherent sentences and they can't even sell themselves.
You could strip down LinkedIn down to your resume, availability status and your email address and it would be fine.