The comments are great and all, but to me, it comes down to production on the field. Styles has shown that last year wasn't a mirage. He might not be the fastest guy on the field, or the most physically imposing, but he is an amazing route runner who has developed a great repoire with Fitz. They feed off of each other because ultimately, their success is tied to each other.
He is just important off the field as he is on the field, which in my eyes, is more than deserving of a payday.
5 years $35M with $19M guaranteed.