I’m a big rule-follower, especially when it comes to language. (I’ve gotten a major thrill from referencing specific sections in the Chicago Manual of Style in non-writing work conversations.) But communication is more than a set of rules–each situation has its own flow and language is a living entity that evolves with time.
So maybe let it go the next time someone uses “me” instead of “I” when telling you about their day. That doesn’t mean you don’t respect language–it just means you respect communication.
I’m always a little baffled when people try to make a big conspiracy theory around Shakespeare. (See also Truman Capote writing To Kill a Mockingbird instead of Harper Lee.) Let the dude have his work!
Also, this is good proof that a writer’s voice is a real thing. Even though Shakespeare wrote sonnets, historical dramas, fantastical comedies, and more, all his works have his particular tone and style.
Maybe you’re not Shakespeare, but you have your own writerly voice. Someone else can be writing about spooky ghosts or family dramas or adventures in space, but your voice is all your own, and that’s part of what makes everything you write unique.