I can sympathize with young players being a bit selfish at first and needing some time to find themselves in a complex environement as ours.
His passing stats on Fbref are quite poor this season (total number, completion, and progressive passes he's one of the worst in Europe) so I doubt he can become a complete attacker. He lacks the creative spark, and even if he's taking on players more than before his success % is nothing impressive (27th percentile). I concede he wasn't fit and he can improve in the next months, but even then the general picture remains the same for me. Potentially a good dynamic finisher but he's flawed from many angles.
A bit late to the party on this one but his take-on percentage, for example, is higher than Saka's and Vini jr's. That really doesn't mean that much in isolation. Many good dribblers attempt lots of dribbles, some of which aren't successful.
As for his progressive passing stats, and pass completion stats, Getafe average 43.6% possession this season, the third lowest in La Liga:
https://fbref.com/en/comps/12/possession/La-Liga-Stats
To put that into perspective, Greenwood only averages 43.81 touches per 90 minutes, compared to Saka's 56.07 per 90 and Vini jr's 48.58 per 90.
When you're not dominating possession, you might find it harder to excel in certain metrics, although some of it would certainly be down to individual play-style.
Speaking of which, Greenwood averages marginally more progressive passes per 90 than Vini jr this season (2.65 to 2.50), despite having less touches of the ball per 90.
The difference in their percentiles (when viewing them on fbref) is merely because Greenwood is nominally playing as a midfielder and is therefore compared against a different cohort of players (most of which will be central players who get on the ball more often), whilst Vini jr. is being compared to other forwards.
And then if we look at SCAs, Greenwood averages 3.98 per 90 and Vini jr, 4.22 per 90.
For progressive carries, Greenwood averages 4.51 per 90 compared to Vini Jr's 5.63 per 90.
For GCAs, Greenwood averages 0.89 per 90, Vini jr 0.26 per 90.
Assists, Greenwood averages 0.35 per 90, Vini jr 0.13 per 90.
Oh, and Vini Jr's pass completion percentage is 71.7% which is actually lower than Greenwood's 71.9%.
Would you say, therefore that Vini Jr is not 'very creative' either, given Greenwood outperforms him in several key creative metrics?
I'm sure there are other metrics and other players we could look to have a more nuanced discussion, but really the point is to demonstrate that using those stats in isolation is very misleading, especially when you completely disregard what other elite attackers do, and what teams they play in, what kind of style they play, etc.