Pretty much. The MD and IL gerrymanders don't come remotely close to making up for the gerrymanders in GA, FL, TX, OH, PA, VA, and MI. And somehow NC ended up with a Republican gerrymander despite a Democratic governor. Meanwhile, blue states like CA, NY, and NJ had independent congressional redistricting.
I agree with these statements. While Ohio might get new maps via an independent redistricting initiative, the redistricting cycle as a whole has locked in many of the 2010 results. I don't think Democrats will net enough seats to take the House in 2012/2014 or even 2016.
They may fare better in the next redistricting cycle (2020) because it will take place after a presidential election as opposed to a midterm so turnout will be higher. Winning the governorships (PA, FL, etc) between 2018 and 2020 will be important if they want to undo existing R-gerrymanders/avoid new ones.
Democrats winning the Texas governorship in 2018 would really be interesting. They could probably net at least 6 seats in Texas with a neutralish map and new seats (another 4?) from the state's population gain between now and 2020.