Depends on your business. If your customers, possible employees and vendors are there you want to be there. If they aren't, you don't.
I had a time a few years ago when I was pursuing a business idea together with my "non-technical cofounder". At the time I thought LinkedIn was a fantastic tool for sales prospecting. We got hundreds of calls but never sold anything. A better sales team could have sold $3M or more of work that way.
LinkedIn really helped recruiters find me when they had good jobs for me more than once.
I recently created a new account because I've been helping out a friend with business intelligence and LinkedIn is great for that.
My friends have gotten me involved with print-on-demand services like
https://littlecocalico.com/
where it is very possible that I could get designs into a marketplace and get a commission whenever anyone buys fabric with my designs. I'm still working on a prototype, never mind a product, but if I got a product into a marketplace such as that one I wouldn't just count on getting traffic from being in the marketplace but I'd expect to work hard at driving traffic through Pinterest, Instagram, TikTok, etc.
https://www.pinecone.io/blog/
is one of the best examples of "social" marketing around a blog. Today it looks ordinary but early on Pinecone wrote down a lot about what they learned about the vector search problem back when people didn't know how important it was. I'd been interested in that technology since 2002 or so and they got me excited that somebody was building a product in that space and that communicated that they were experts in a way that paid advertising could never accomplish.