> easy to ignore... I don't get notified when it's my friend's birthday

LinkedIn is a lot noisier than Facebook. The notifications that I get from it are even more useless: people who you've never worked with who want to connect, people who LinkedIn feels you want to connect to but again you've never met them, ... the list goes on. Back then they also used dark patterns to make it hard to unsubscribe to their email notifications. Facebook isn't the best corporate citizen, but it's still better than LinkedIn