As you found out, I dont think LinkedIn offers controls to restrict what logged in users can view. I think they used to, but they slowly removed those privacy-

As you found out, I dont think LinkedIn offers controls to restrict what logged in users can view. I think they used to, but they slowly removed those privacy-respecting features when they had pressure to grow aggressively (like Facebook). IIRC, I think it started around when they became a public company and the stock was underperforming.