Not surprising -- work can really suck the life out of you. Older generations seem to have largely responded to this by pretending it didn't and then becoming cynical jerks ( see other comments in the post ). The honesty is refreshing... though unfortunately, the advice they're going to get from any peers is likely just to be "yeah, you'll get used to it".
IMO, one reason work is worse now is because companies are more focused on short-term profits and don't care as much about workers as they used to. Workers (just my opinion) used to matter more as people. Now workers are an accounting entry.