I find it pretty easy to skip past the recruiters and connection requests when I pop in from time to time. I just generally ignore all the random recruiter request that are way off target. (Though, in all fairness, my LinkedIn profile is very scanty.) And I'll rarely respond--usually with a polite no--to on-target ones given that I'm not really on the market. (And have never gotten a job since grad school decades ago that wasn't a personal contact.)