Why don't you apply this logic of yours to Coutinho? He was the best Liverpool player under Brendan Rodgers and Klopp. He is arguably the best player in Brazil NT under Tite and had better WC than Neymar. There is usually a very strong reason why he performed so well under many coaches and different systems but your logical explanation he is mentally weak or doesn't fit.
1. if a player plays under 3-4 different managers as a starter, but fans think that a player sucks=a player is usually very good and recognized by all coaches (and way better than fans think)
2. if a player is benched be several different managers in a row, but fans think that he is awesome=a player is usually just meh, and overrated by fans
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3. Coutinho played for some coaches and was benched by others.
You can't put him into any of categories from my post.
A perfect negative examples from my post are: Denis Suarez, Halilovic, Quaresma, even Samper etc
On the other hand, positive examples, hated by fans, loved by managers are for example: Rakitic, Paulinho (China, Barcelona, NT team).
Also, for example, today we can understand why BOTH Lucho and EV had more faith in Andre Gomes than in Denis.
Here, on Barcaforum, Gomes was rated as the worst footballer in our team.
Imo, even though he sucked and was a bad fit here, he is still miles ahead of Denis Suarez (who was, for example, fans' favorite here over Gomes, again: since he is lighter, more technical and has more flair).
But now in hindsight, it is quite simple to understand why was Gomes getting way more opportunities BOTH under Lucho and EV than fans' favorite Denis.
They both suck for Barca, but outside of Barca, Gomes is actually a good footballer and can have a decent career in a top flight football.
Denis, on the other hand, will never have a footballing career in any top club.
Or, take Samper for example: Lucho didn't have too much faith in him (our fans wondered why, since Samper was such "a gem").
EV didn't have any faith in him.
When he played on loans, he was a crap again.
Then, some of our fans had crazy excuses as always: a coach in a loaned club didn't love him. Or: they play a defensive football, not suitable for him. Or: they prefer their players and NOT loaned players.
While the truth is: Samper sucks and there was a reason why every single coach passed on him.
Or, remember when Halilovic lost his place BOTH at Sporting Gijon (under former Barca's player Abelardo) and at Las Palmas.
People had all sorts of crazy sci-fi excuses for our boy and why he was benched.
Fast forward to a present day: Halilovic was benched because he sucks in any club in which he plays.
Also, for some time, I am mentioning the same argument about Puig: he is crazily overrated here among Barca fans.
Yet, not a single Spanish youth NT coach was ever interested in him.
What do you think will prove to be a correct answer in 2-3-4 years?
1) All Spanish youth NT coaches were idiots for not recognizing Puig?
2) or all those coaches were right, Puig is good but nowhere near good enough for that level and thus overrated by Barca's fans
There will always be 1 out of 10 cases like:
Mourinho not recognizing Kevin De Bruyne.
Or Busi not playing in NT teams since he was a late bloomer.
But in other 9 out of 10 cases, a life will be way simpler if fans will turn off their emotions and love/hate bias towards players and just apply a simple logic.
For example, just wait until Malcom will go to some other (big) club and more or less he will be treated equally as here. BECAUSE he is not a player for biggest teams, but a started for Uefa cup and midtable European teams.
Ah, your narrative that "whoever EV doesnt pick is shit, those he picked isn't", isn't right either, in fact terribly wrong at times. Great way to bring in a principle while your own explanation is incredibly flawed as well.
We can go 1 by 1 case.
And let's see how many times a coach was wrong or right.
Gomes vs Denis.
Rakitic, a starter under all coaches.
Suaraz, a top3 Cf still.
Pique.
The only problem might be Coutinho, one of the best CAMs in the world. But then, that guy showed in his career that he COULD be a decisive top player, so a coach has more faith in him, the same as how he did have in Suarez and Pique when they were in a bad form.
On the other hand, in whom EV didn't have faith?
Samper, no comment needed
Denis, the same
Malcom, you'll see how his career will develop post Barca.
Dembele, injured half of a time, raw and out of form for a few Months each season after injuries, disconnected from a team when not injured, questionable IQ. In top form for probably 20% of time here in 2 seasons.