This could point at an earlier step in the pipeline - e.g. the recruiters at those companies may have been using LinkedIn as a primary search tool - but that's a signal of its own.
However, you can double your income by thinking differently about LI. If that doesn't speak to its value as a network, I might need to reassess what network value means.
How? I would love to double my income.
I did not have an expert write my profile and in fact I’ve hardly touched it in years.
My most recent job search consisted entirely of friendly intros (most by colleagues at the hiring manager level) at a mix of startups and major tech companies. I have met these people through the normal course of business and life, and never through LinkedIn.
Maybe I'm special, because I've spent my career in tech consulting, so I got to network that way, but this is hardly a unique career path.