I haven't had a great signal-to-noise ratio from recruiter DMs on LinkedIn myself. But I think the more general point is that the "candidate sees job posting on

I haven't had a great signal-to-noise ratio from recruiter DMs on LinkedIn myself. But I think the more general point is that the "candidate sees job posting on job board and submits an application" hiring pathway is mostly dead. LinkedIn recruiting is probably the main channel that's replaced it, but college recruiting events, referrals, and poaching former colleagues are big ones too. The referral pathway in particular seems to have exploded lately, Blind and similar sites are full of people (successfully) requesting referrals to top tech companies from anonymous strangers.