People who add/accept anyone on LinkedIn (LION) to increase their reach might be doing it wrong. The way feed algorithms work – in principle – is they show your post to few of your connections, if they interact with it, the algorithm boosts it to more connections, and so on until it becomes viral, dies, or get replaced by other more viral content.
Unless your content is inherently viral, a big factor of people interacting with your content is them knowing you. Having a big network where you don’t really know the majority decreases the chance of your posts getting to someone who actually knows you in the initial phase, hence decreasing chances of interaction, which leads to lower virality and eventually less reach.
I am curious to see if LinkedIn data matches my argument (people with more connections, get less interaction on their posts).