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 to be of a professional nature.

Yes, there are some fluff on LinkedIn especially when it comes to variety of videos or feel-good or motivational messages being posted but I take them in stride -- not everybody is same and if some people are social and have desire to share their social feelings with others, then so be it.