I think Hyman got a bit of an unfair reputation mostly based on what he wasn't and not what he was, and that's never really a good way to evaluate players. He was a dreadful finisher first and foremost, and struggled to make good plays off the rush. However, he was already then an absolute workhorse who could push quality possession in a big role like a high-end forward. Add that he was also, and still is, our best forward at actually working the puck into the slot for scoring chances for his linemates*, and you have a pretty good player. As the cherry on top, he's added a scoring touch.
He's a legit top six forward.
* This might surprise people, but Hyman is not only good at getting to the net with the puck himself, or providing a net front presence off the puck, he's also setting up passes from the low boards into the slot at an elite level.