Why Aren’t We Talking About LinkedIn? - The New York Times

LinkedIn has adopted all of the addictive patterns of social media, to great affect. The site has continued to grow in every dimension of engagement.

Considering its size and social footprint, LinkedIn has been a notably minor character in major narratives about the hazards of social media. The site hasn’t proved especially useful for mainstreaming disinformation, for example, nor is it an obvious staging ground for organized harassment campaigns. It is unique among its social media peers in that it has not spent the last five years in a state of wrenching crisis.

But LinkedIn is very different since it is a "professional" or business network. it is a vertical network focused on a single dimension. You don't go there for news. The only thing it’s a battleground for is recruiters, not partisans.