Yeah, he is being diplomatic.
Red and McKay themselves admitted the script they wrote after Wright left was tossed out, since they couldn't get it to work, so they went back to Wrights script.
They then included all the stuff Marvel were not allowing Wright to do, because for a while Marvel was not willing to allow their main character to be a thief and a felon. But between shooting started and Wright got fired, Guardians came out and showed an anti hero type character, thief type character is not a turn off or perceived as harmful content for children.
Antman was very good. But lets be real. Reed and McKay worked off a very good and polished Edgar Wright script, who also handpicked the whole cast, and also had already visualized all the action scenes. I give Edgar Wright far more credit for Antman than anyone else. If you look at Wrights batting average and resume, he is on the path to becoming a legit legend of cinema.