Why is LinkedIn enumerating my browser extensions?

https://news.ycombinator.com/item?id=47967262 - 74 days ago, 222 comments

https://news.ycombinator.com/item?id=47613981 - 3 months ago, 812 comments

https://news.ycombinator.com/item?id=46904361 - 5 months ago, 244 comments