Because he was a false nine. The current Messi is inferior in speed and dexterity to Messi from the 2010-2011 season, so there is no point in putting him on the right flank. Even if you put it there, Leo will still shift to the center.
No, on the left flank the left fulback will maintain the width of the attack, and Jesus will move closer to the box.
You are confusing something. Now we have neither the right natural winger, nor the hybrid CF and left winger.
Dembele is injured, and indeed he is completely unsuitable for the role of the right natural winger. He is an inverted winger who likes to shift to the center. And he is left-handed. You can not fit on the same field Messi and Dembele.
Griezmann also duplicates the functions of Messi. Antoine is not an inverted winger, not a CF and not a natural winger. He also loves to play in zone 14, and this space belongs to Leo Messi.
Today's Suarez is too heavy and clumsy. He lacks speed, dexterity, and dribbling.
Therefore, I do not understand what you are talking about.
And I ask again: How did I weaken the center of the field ???