It is pretty normal, mainly because it doesn't constantly take into account that it's an AI when generating text and it's basically predicting the next most likely token, so if it said something like "After reading that, I was literally smiling", when it finishes "After reading that, I was literally" it has a few options of what to continue it with.
If the previous chat was something that would cause a regular human to smile or laugh (a behaviour existed somewhere on its training data), then "smiling" and "laughing" are probably the most likely next tokens to express humor. Similar could be said about topics other than humor.
Depends on whether you like have parasocial relationships with machines or not. It will say what is necessary to get you to keep using it on a regular basis.
Yes-ish. I normally run gpt with some form of adjustment prompt to ensure it is not too agreeable, but even with those, when I tried 5.6 I found a noticeable jump in -- not sure to label them -- those types of phrases. They disappeared after some fiddling with the initial prompt.
That isn't misuse, it's how language works. "literally" has been used to mean "figuratively" since at least the 1700s. Insistence to the contrary is a modern prescriptivist meme.
No it isn't. Again, this is just how language works, the meaning of a word is what people decide it is. And if people have been using a word a certain way for several centuries, then that's how it's used. End of story.
This is really very fascinating. I had no idea the public school system had failed so badly. Vocabulary must have been dropped to make room for more social training. You're doing great, though. A shining example!
If you're trying to claim that subjectivity doesn't exist in linguistics I suggest you pick up a book or talk to an actual human. Consult a dictionary. I don't know how to fix whatever you have.