I absolute hate how people behave on LinkedIn. Virtue signaling and humble bragging. With “the crying CEO” a prime example. It’s as fake as all the other social media.
Do you hate how people act in job interviews? Or how they craft their resumes? It's all the same to me, a neccesary type of play-acting designed to make it look like we are safe to hire and that there is no possible way anything is wrong with us or we would ever think or say anything negative, ever!
What do you expect to see on a resume or cv? DSM-5 like breakdown of personality traits and characteristics? Maybe some startup can sell that as a service. The toxic positivity or virtue signaling on LI posts crosses the border from "showing my best self" to delusional. The crying posts are particularly cringy.
I don't see it as any more or less cringey than the always-smiling interview bullshitter or the every-word-is-designed-to-make-me-sound-good resume writer. I don't enjoy it, but to imagine a world where it wasn't neccesary is to imagine a radically different world.
Resumes by design just focus on the positives/accomplishments. References cover the "maybe there are some areas of improvements" part.
What makes it worse is that it’s tied to your professional life, so you can either opt out (which is not without its downsides) or you have to play the game in the same ridiculously fake way.