EV can't be guilty for absolutely everything and for every player.
It's understandable that you've been trying to defend your favorites, specially Valverde, but the time has already passed on "lamenting" about players who were unsuccessful a decade ago.
It's NOT a statistically significant TREND man, and you have to realize that by comments like this, you only show out one of your several weaknesses in understanding football as such.
This game is a TEAM-sport, where often mediocre individual players can form a good and successful TEAM, and often teams, consisting brilliant individual players can also fail miserably.
Because it is the TEAM, trained and kept together by the boss, the coach, if great individual players FAIL to form a team, it is ALWAYS the fault and responsibility of the COACH, who represents the entire team - as a collective, as a team.
Games like the one yesterday are lost NOT due to the bad individual qualities and form of the players, but DUE TO the undeniable LACK of TACTICS, IMAGINATION, CREATIVITY of the COACH!
The time has passed when Valverde could be defended in any way or manner, probably it happened right after Anfield.
The fiasco of not winning the Copa was just a bonus on his list, as it became obvious for EVERYONE - objectively attached to this particular team - that Valverde is simply lacking the qualities and capabilities to train this team.
When you try to lament about the past and try to dig out examples of individual footballers from a decade ago, you simply admit that you have no clue about the tactical part, neither about how a trainer should ENTHUSE or MOTIVATE his team to be successful.
Some players play bad, some play good, but it doesn't matter. The team as a team is horrible.
What matters is the OVERALL Barca game-play that has NOT been as bad as now, since most of us are watching the team!