THis is not true.
Even B-grade goal scorers like Mantha, Athanasiou and Vrana show it.
In the NHL, goal scorers score goals. They don't need a "playmaker" to have passable goal-scoring stats.
Here are the Red Wings forwards who played 20 or more minutes who scored more goals/60 than Zadina.
Vrana
Bertuzzi
Fabbri
Erne
Mantha
Ryan
Svechnikov
Gagner
Filppula
Larkin
Namestnikov
Glendening
Here are the guys who played 20 or more games who scored fewer G/60.
Rasmussen
Helm
Nielsen
Brome.
A real goal scorer doesn't need a playmaker to be in the top 4-5 of that list.
Instead, Zadina is 13th out of 17.
Behind the likes of career fourth liners and defensive-forwards.
Zadina just isn't the shooter we all thought we saw in his Draft Year WJC.
That's not to say he can't be an effective top 6 forward, but I don't think this kid ever really justifies a top 6 pick at this point.
He's going to be 22 in November. While that's still young, a lot of NHL top 10 pick forwards are murdering the NHL this age.
Pastrnak, the guy to whom he was often compared, put up 34 goals in his 20/21 season.
This kid was given every chance to breakthrough last year. He spent more than half the year as the shooting option on the PP. And while our powerplay didn't ever seem capable of that extra pass that can make a shot virtually unstoppable, goalies looked like they were picking cherries against Zadina.
His slapper just isn't that powerful and his release doesn't seem that deceptiive.
Sure, he'd score more goals out there with Hedman, Kucherov and Point. Who wouldn't?
But he was behind 12 Red Wings forwards.
I think maybe your memory may be a bit distorted in terms of the 6th overall pick. It's common for people to think that all top 10 picks have to become legitimate NHL superstars, and if they don't, they underachieved. If you look at 6th overall picks from the last 10 years, Zadina is progressing well, and looks like he will justify being 6th overall. Obviously, he needs to produce more offensively, but comparatively to other 6th overall picks, he's doing alright.
6th overall picks
2020: J. Drysdale. Promising young D with tons of potential, likely will have a better career than Zadina, but he still has lots to prove.
2019: M. Seider. See above about Drysdale.
2018: F. Zadina
2017: C. Glass. Still has lots of potential, but Vegas is obviously wanting more out of Glass. I'd rather have Zadina.
2016: M. Tkachuk. Solid pick, nice all-around game. No argument for Zadina here.
2015: N. Hanifin. Contributing top 4 defenceman, but definitely not a star by any means.
2014: J. Virtanen. I don't like using the "bust" word for a player with 317 NHL games played, but underwhelming pick for sure.
2013: S. Monahan. Has had a couple really nice years, and a couple "meh" years. As of now, no argument for Zadina, but in a couple years Zadina's value could be higher.
2012: H. Lindholm. see above about Hanifin. He's solid, but not a superstar by any means.
2011: M. Zinanejad. Has taken his game to another level over the last 4 years, but 3 years into his career, there were many questions.
2010: B. Connolly. Like Virtanen, hard to call a player with over 500 NHL games a "bust", but we'll label him as an underachieving pick, like Virtanen. I give Connolly credit though for hanging in there, and proving he's at least a useful NHL player.
2009: OEL. Solid career, useful top pair D, definitely good value at 6th.
2008: N. Filatov. No problem labelling him a bust here. Selfish, one-dimensional player. Tons of skill, no heart, no desire to play D, he was quoted as saying "Filly don't do rebounds" what a clown comment lol.
2007. S. Gagner. Had some good NHL years, and has had a nice career for himself, but not a star at all.
2006: D, Brassard. See above for Gagner.
2005: G. Brule. 299 games played, but I think you can label this one as a bust.
2004: A. Montoya. Yeah, bust here as well.
I'm gonna stop here, but basically my point is that we as fans always think if a player is drafted 5th or 6th or 7th, we are always expecting a star player, but the reality is, 6th overall is far from a guarantee to be a star. Obviously some guys on my list here can be considered as "star" players, but many of them are just serviceable NHL players, with a couple busts mixed in. I am also left wanting more from Zadina, but let's give it time. This is a big year for him, and I fully expect him to hit the 20 goal mark this year. His shooting percentage will not be as low as it was this year.