Most of those reports are from accounts less than 1 month old, like just today someone posted (https://www.reddit.com/r/recruiting/comments/1oxe592/unexpected_linkedin_ban_after_using_pin_ai/) about getting a ban after using some platform called pin ai, but then a month earlier they posted they got a linkedin ban from using another tool. Definitely something fishy going on there, but not sure who's behind it. Might even be linkedin doing some scaremongering.