Reddit is a dumping ground for venting just like LinkedIn is a dumping ground for bragging. You are going to get skewed perspectives.
However, there is also an element of unrealistic expectations coming to a head. New grads historically rarely got extremely high paying jobs, which seems to be an expectation especially in the tech sector. There are also a lot of people complaining about not being able to find a job with their degree that is not that in demand. A lot of people want an easy life in their 20s because they are comparing it with their parents lives in 30s and 40s.