The claim is that CNN forged the verified mark in the supposed screenshot. "But they thought they should" is not a defense.
"Forged" goes to intentionality. They've said they didn't mean to do it.
Maybe this is just a corner fight about linguistics.
What I don't think they did is screen grab a tweet and ask their photoshop guy to add a blue tick. À
This implies that they don't just screenshot the tweet, they somehow generate it? Some kind of automated "photoshopping", you might say.
If I had to guess, to be consistent with other screenshots, match TV resolution and shape, transparency or backgrounds, and maybe have a trail log of how and when that screenshot was generated.
I assume big media companies either use such products, or maybe even have in-house solutions.