Having precise grammar is not needed to fully convey an idea
Small grammatical mistakes do not affect the delivery of a sentence’s meaning. When it comes to reading books and receiving commands, grammar is a small part of delivering information rather than the only thing. Therefore, having precise grammar is not needed to fully convey an idea.
Small grammatical mistakes don't affect the performance of delivering information. When reading stories/books, people focus on the story more than grammar. The Diary of Anne Frank provides a great example. It’s the personal journal of a young girl hiding from the Nazis in the Netherlands during WWII. The family was betrayed and Anne died in Bergen-Belsen shortly before the concentration camp was liberated. When that diary was first presented to publishers by Anne’s father, publishers didn't think the grammatical mistakes would affect the girls' extraordinary glimpse into what life was like in those times of fear. Publishers and readers care more about the real living situation at that time rather than precise grammar. Also, grammatical mistakes don't affect the performance of completing tasks. For example, when hiring workers, people should always use good grammar in job postings, but it probably won’t impact the hiring outcomes. According to research, job posts with grammar mistakes do not perform any better or worse statistically than job posts without grammar mistakes.  Both good-grammar and bad-grammar job posts attract the same number of applicants with the same qualifications, and the role takes the same amount of time to fill. Therefore, grammar is not a big problem when language is used for completing tasks. People don't care about the correctness once they understand the meaning.
Grammatical mistakes are still important to fully convey an idea. Grammar is the foundation of language.  Grammar plays an integral part of how most people communicate. Without it, our sentence would make no sense. Studying grammar and employing it in writing can be a difficult and tedious task at times, but our lives are much easier with it than without it. Even a slight change in grammar can seriously alter the meaning of a sentence.  For example, "an ice cream float made with fries, homemade chili, and cheddar cheese" is understood as separate menu items, but without the commas it might be considered a single one. As capable, competent writers, we need to be able to communicate our thoughts, feelings, and ideas without ambiguity. Grammar will still have value after people graduate.  Unlike the papers and homework assignments, the students will have to complete in their four years of college, using grammar doesn’t just stop. In fact, many people who are able to communicate with proper grammar already have a leg-up on their competition while job searching. Therefore, working on grammar is always a topic no matter how old you are and what job you do.
We don’t all live in circumstances as historically exceptional as Anne Frank’s, but we do all have a unique story. She had a story to tell, and she was a good storyteller. That’s what made her book worth publishing, reading and publishing again. Are you a good storyteller? This applies no matter what you are writing. Even a book on how to play the stock market will sing if told by a storyteller. Releasing your inner storyteller is more important than grammar, spelling and punctuation.