Imo, people are too harsh on Serghei now.
I agree with some of his points.
Lucho is guilty, of course, but only to some extent.
Our fans are (imo) underestimating how average are some of our players.
The current midfielders and guys from 2001-2003 are two weakest set of midfielders in the last 20 years.
Busi is good, Iniesta is too old. Other guys are more or less a joke for any Barca's standard from 1995 till today.
Rafinha, Denis, Roberto, these guys are miles behind one Fabregas, who was a crap.
This is just my opinion, but if we could in a Sci-Fi way copy the current team into Pep's era and gave them to Pep in 2009, I am quite sure that Pep would say:
Wtf am I supposed to do with these midfielders?
And that he would sell 5-6 of these guys and ask for top midfielders like Verratti, Gundogan, Coutinho etc.
Since really, playing with current Rakitic, Denis, Gomes, Rafinha, Roberto and similar and expecting Barca to have a recognizable, beautiful style, it won't happen.
Lucho is bad, yes.
Lucho made 100s of mistakes, yes.
A better coach could slightly improve a current team, yes.
I mean, seriously, for example, Barca in 1998/99:
https://en.wikipedia.org/wiki/1998–99_FC_Barcelona_season
We had midfielders:
Rivaldo, Figo, Guardiola, Luis Enrique, Cocu, young Xavi, Oscar and Roger Garcia (La Masia guys), Ronald De Boer (!!), Zenden, Ciric, young Luis Garcia
That's:
1. Rivaldo, the best player in the world back then, and the best midfielder (or attacking midfielder/forward)
2. Figo, the 2nd or the 3rd best player in the world, so the best winger in the world in that moment
3. Lucho, a level of let's say current Iniesta/Arda/Rakitic roughly
4. Cocu, level of prime Rakitic
5. Ronald De Boer, level of Rakitic/Arda again (Dutch NT key midfielder, won a CL with Ajax in 1995' as a key player)
6. young Xavi, better than ALL current midfielders, more or less
7. Guardiola, let's say level of prime Raki again
8. Oscar, Roger, Luis Garcia, level of Rafinha/Denis/Roberto
9. Ciric, the same
The point is that we had 5-6 world class midfielders and players like Denis/Gomes/Roberto/Rafinha were a 7th pick back then, after Rivaldo, Figo, Xavi, Lucho, Guardiola, Cocu (or even Ronald De Boer).
So, we had 6-7 players better than players of Rafinha's or Denis' level.
While today, what?
We have old Iniesta, horrible Rakitic. And Gomes/Denis are our 2nd/3rd or 4th pick midfielders.
Gomes is either a 2nd pick or 3rd pick (behind Rakitic who can't control a bouncing ball anymore).
What I am trying to say: this is truly a horribly midfield in terms of player's skills, compared with other Barca's generations.
Why?
1. we had poor La Masia luck
2. we spent money on wrong players (Arda, Gomes)
3. we have overspent in other areas (Neymar, MSN wages) and we don't have money for better midfielders
So, yes, Lucho is guilty to some extent.
But we have tons of other, deeper problems also like: very average players in midfied and on a RB, plus very questionable motivation of majority of players.
But once again, Lucho will be gone in a summer and then a lot of players will be exposed under a new coach, where we won't be able to blame a coach for everything.