Untold Truths of being a Machine Learning Engineer

I recently was a part of an interesting Reddit discussion and a few of my answers got highly upvoted. The main point of it was the untold truths of being a machine learning engineer. I am sharing the key takeaways in a curated manner as I was one of the more active participants. Many Machine Learning enthusiasts think that they will play with fancy Deep Learning models, tune Neural Network architectures and hyperparameters. Don't get me wrong, some do, but not many.