No reasonable person is suggesting that we need to eschew historical context and nuance to redefine statements like these. At the same time, we should acknowledge that language isn’t immutable - as 1400 years of English language momentum can attest - and there’s nothing inherently wrong about its generational evolution.
If you make literally mean figuratively as well, it loses all meaning. In what context is that word ever useful? It describes literally everything. Making the language less expressive and more difficult to use is wrong.
In the same sense, is the idea that I now have to look when a particular piece was written to understand how to interpret the pronouns? How does that make the language better?
I'm all for improving the language. Slang, new words, new idioms, have at it. I just don't see how either of these changes improve the language.
We already interpret language through the lens of its era all the time.
For example, when's the last time you heard someone use the word "gay" to mean "happy" or "awful" to mean "awe-inspiring?" They have very different colloquial definitions today, but when I hear the Flintstones theme song I know what "have a gay old time" means, and when I go to church I know that the hymn "God of awful majesty" isn't sacrilegious.
[EDIT] fixed a mis-labeling.