There seems to be a lot criticism on Linkedin these days.
Whether it's people plagiarising stories, people treating it as a dating site, people complaining it's turning into Facebook.
Social media is constantly evolving and if things bother you,sure it's ok to criticise but constructively with ideas would be more beneficial than just a complaint.
No one asks you to use the site, you do it out of your choice.
Take a second to think of all the hard workers at Linkedin and how they are trying to improve the site and evolve constantly.
Am sure you wouldn't appreciate people critiquing the company you work for.
And if you think you can do it better, well action always speaks louder than words. How would you about making changes if you could?