I think it's a sign of high intelligence if kids/teen create new words/vocab to express themselves better. do you agree ?

I can't say I think the inventor of the words swag and yolo are intelligent... 😂 But I see where you're coming from

You don't get out much, do you? (Laughs behind your back.) My dear! The way young people speak is but a foul piece of noise. It has been this way for YEARS!There are too few of the words that even are attempted to sound legit! English IS my language. The youths have destroyed any usability of the words we have known.
No I am not a teacher.
But there are no more words left in our language that haven't been shredded and ripped apart.

Bit of a difference between einstein creating new maths and kids in da hood making up, she was dead fit innit bruv

Take that idea to its natural conclusion and nobody will know what the hell everybody else is talking about. Oh wait................that explains sooooo much.

If in doubt......covfefe!

I'll try that when I stop procrasturbating.

Language evolves

Nope.

Thanks, I'll take that as A compliment. When I was A teen a friend and I had many made up words that we used just between us. It was fun at the time.