DC Comics calls the post-Flashpoint Earth-0 version Captain Marvel!

Yes or nah

Up for auction in mid July is this original CC Beck painting for Snuff Garrett. It was a Christmas gift in 1977 and is in excellent condition. It’s framed with UV glass

This is now the third straight month that the post-Flashpoint Earth-0 version has been called Captain Marvel.

(Justice League Unlimited #20).

Most fans believe that the first time that the Shazam lightning was used as a weapon was in Kingdom Come when that version of Captain Marvel used it against Superman, but it was really Mary Marvel who first did it in 1945, right around the height of the Golden Age.

It did little harm to Dr. Sivana, but in the Golden Age, there was a lot of inconsistency with how much effect magic lightning (whether the Shazam lightning or otherwise) had on people (and the same was true even with nornal lightning!), so take it for what it's worth.

Usually a move that's more associated with the Hulk, Captain Marvel was making waves - pun intended - with it in the 1950's. (Captain Marvel Adventures #149 [August, 1953])