I think you're taking the is good enough part a not literally. It simply means that he has the skill set, mentality and technique to be a Barca player if we go by his games thus far for us. I mean you can clearly see yourself if some player is simply put out of his depth, but that's not the case for Denis
I don't agree.
About Denis, for now, he showed:
Good things:
+ he has some nice technical skills
+ he can link up well with attackers
+ he can produce some magical passes
+ he is not dumb
Bad things:
- he disappears during matches in some periods
- he is not imposing himself as he should as a Barca's midfielder
- he is not covering as much space as Rakitic or Gomes
- he isn't good at recovering loose balls
- he is poor in defending
- he is slightly all over the place like Rafinha in positional sense
Again, it is way too early since he can surely improve a lot in all areas and we will need 1-2 seasons to see whether he is Barca's material.
When you say or other posters that he has a skillset needed for Barca, imo, you are again mostly looking only at attacking skillset, passes, technique and dribbles.
Denis has that, but that is not the only area of game for Barca's midfielder.
Analogy would be Halilovic, Adama or similar players.
Adama has awesome attacking skillset, but he lacks in IQ, defending, and lots of other areas.
Has he proved then that he is good enough for Barca?
Well, in attacking part he is good enough.
But overall, on all areas=he is not good enough.
Halilovic=world class in some areas, like dribbling, technique and similar.
But lacks in other areas.
Has he convinced that he is good enough for Barca?
Well, in attacking sense he is good enough.
Overall, not yet.
So, let's go back to Denis or any other player:
1. not only that he played only 300 minutes in Barca which is too early to say whether he is good enough or not (not to mention crazy comparisons like: he is our player for the next decade or he is the next Iniesta)
2. plus, in these 300 minutes, he showed some good things and some bad things
So, again, if a player is good in one area of a game, it is hard to say: he is good enough for Barca.
Look, Alex Vidal is good enough for Barca if we look only at crossing and attacking actions.
When we look his overall skillset in lots of areas needed for his position, he is not good enough then.
It simply means that he has the skill set, mentality and technique to be a Barca player
So, about this part above: he showed ONLY that he has technique to be Barca's player.
We are yet to analyze more his overall skillset, like defending, workrate, linkingup, stamina etc.
Plus, we haven't seen too much of his mentality or mental strength yet to analyze him better.