I don’t see a point of constantly shifting the words.

There is no point, that is just what humans do with language. It is never static. Always evolving.

Every generation crates new slang to differentiate themselves from their parents. Give it enough time and Latin turns into French, Spanish, Portuguese, Italian and Romanian because each local population changed Latin in different directions.

It is even happening to English. There are now several sub-languages of English according to linguists.

UK English.

US English

Aus English

Singapore English

International English

To name just a few.