There's also a lot of use of weasel-words etc to produce effect (usually negative) here.  "Many" people "severely" criticized AMLO,  for instance,  for x,y,z.  I've toned down the phrasing,  but it's still vague.  It would be better to be specific and clear,  however.
 The Cardenas section is clearly meant to delegitimize,  however,  it's not very careful.  It was reported that Cardenas wanted the Presidency for his son,  for instance,  and rumours were that back-room deals were in play.