You use language to communicate with a group.
Different terms render themselves well to different cultures, age groups, and professions.
You would find the writings of lawyers, scientists, publicists, humorists, and novelists to be very different.
You would also find literature from the different ages to differ in both vocabulary and thought construction.
You would find older literature to be formal than modern literature.
You would find the Bible, law and business language to be m structured and formal than newsprint.
You wouldn't find the words thou, thy, art etc in use in mainstream english.
There is nothing wrong with hip.
Finally, thought and vocabulary does represent culture and mindset behind the thought. It separates those who focus on presentation, trivia and bull, and deliver nothing; from those who focus on actionable content to produce results.
It separates those who can't contribute anything themselves, so they focus on finding fault with others; from those who worry more about results than about making an impression on others or pleasing the critics.
Well, Dr. Zweistein, please show us the contributions.