True. There are lot of ongoing posts discussing this trouble. I like the following comment on this post: https://news.ycombinator.com/item?id=30215033 where the guy jsnk has aptly summarized the origins of the cringe post on linked in.

The main cause behind Linkedin being cringe is because it's fake and phony. There's so much fake positivity, humbleness, appreciation, virtuousness and empathy from every part of the corporate world now. This used to be at least guarded amongst upper level management, who endured this garbage but at a great financial gain. Now this corporate cringe has penetrated the general public. People who are making peanuts are talking about "synergy", "innovation" and "disruption".

Joining this cringe-wagon are some new ones which are spreading support for religions and political parties 🤮