This.
Snyder always makes great "looking" films, but he's not exactly a great storyteller. Hate to beat a dead horse, but MoS could have easily been a great film. I'm not sure if Goyer or Nolan are to blame, but ultimately Snyder is the director and he needed to pull the reins on that third act (among other things). Hopefully he has learned and BvS rights the wrongs of MoS.
And as far as Lex goes, I'm not worried because I didn't even see "this" Lex:
And if you don't like the "red capes are coming" line, don't put that on Eisenberg, direct your vitriol to Terrio and Goyer, then ultimately Snyder.