Like it or not, LinkedIn is still by far the most used platform by recruiters (agency and internal) looking to hire. I despise the platform but it's undeniably valuable as your career progresses and the probability of being approached by a recruiter increases.
Ultimately, if you're not looking for work, there's zero value in LinkedIn. Realistically, most people choose or need to look for a new job eventually and in that scenario, LinkedIn is by far the most effective platform to increase your odds on finding a new job.
I have gotten plenty of value out of the platform - including BigTech companies reaching out to me. One offer I accepted and where I worked for almost four years paying way more working remotely than I could have made locally.
My last two jobs have also come from LinkedIn. Exactly how am i supposed to find remote jobs?
Ultimately, if you're not looking for work, there's zero value in LinkedIn. Realistically, most people choose or need to look for a new job eventually and in that scenario, LinkedIn is by far the most effective platform to increase your odds on finding a new job.