If you are Developer or even a DevOps or Data Engineer, LinkedIn is a very handy tool in order to get connected with recruiters and also to apply for jobs that are posted there. Sure, there are other great online job boards and even physical job agencies but I find (LinkedIn) by being marketed and promoted as a professional job seeking / networking tool, even the type of conversations you have with your contacts tend…
I think value of LinkedIn increases as you progress in your career and/or into harder to fill roles. I've now passed the 20 YOE mark in my careers and have moved into management, and it's at this point where I'm really starting to find value from LinkedIn. Yes, there's tons of spam ("I've got a great entry-level role for you!"), but I was able to use it very effectively in my last job search. Of the 4 opportunities I pursued through the final interview/offer stage, 2 were initiated by someone finding my profile on LinkedIn and 1 was a process that got stuck that I was able to get unstuck by reaching out to a connection at the company. The two "inbound" opportunities were both Director/VP level roles at companies I was interested in working in.