The way it reads, it sounds like takeoff was initiated only (likely due to a config warning) without the flaps set. I just don't get it.

Every fleet has 2 times on the checklist where the flaps are checked and the new-ish callout for positioning them at the start of taxi.

I maintained early on that the change to the CA calling for the flaps at the start of taxi wouldn't change a lack of checklist discipline, and that is obviously the case. Whether the CA calls for it or the FO does it on the salute, it doesn't matter if you're not doing the freaking checklist.

I rode on a maddog a few weeks ago where the FO was just calling out the checklist from memory. Pretty dang poor- and quite the amazing memory considering how many items there are.