I never have, and never will understand why people think Heinen is soft.
Fwiw, I get the need/desire for a physical winger. I'd love a Josh Anderson or Alex Tuch here, but Heinen was never billed as, nor ever claimed to be a power forward, and there's room on the roster for both.
He reminds me a lot of vintage Loui Eriksson (i.e. the good version). He has a real active stick that disrupts a dozen plays a night. He plays with good energy and steals pucks, he works the walls, he competes... He doesn't hit much but he it's about the same as Marchand, Pasta and DeBrusk. He gets over 40 takeaways a season. Last year he was 3rd on the team in takeaways despite being 12th on the team in ice time. You don't steal that many pucks without engaging in and winning your share of battles.
All that said, I will admit to feeling less confident in him in the playoffs. Not in terms of his effort or two-way play, or even his playmaking. It just felt like he was going to miss the net or find some way not to score when the chances came his way. I'm willing to give him some rope on that...
I think his goal scoring is probably the area of his game he's least confident in. When he first came up I thought he was a sneaky good shooter. He was accurate and had a lot of zip on that dragging wrister he likes to take, but he struggled in the playoffs in 2018 and I think that carried over to last year's regular season. It also didn't help that he spent most of the year playing with AHL call-ups, but whatever the reason, it felt like he never got that confidence back in his accuracy. He reminded me a bit of Rich Peverley that way last year, like every good chance he got he ripped off the glass. I'm really hoping for a fresh start this year and the shot he took against Dallas was a good start.