Walked back, or was never going to be a requirement? The only statement from Mamdani that I can find is one saying that ID would not be required. I'm on the fence as to the efficacy of this scheme. The idea is not unprecedented, so time will tell.
Experts say there’s plenty of precedent both in the US and abroad for state-supported food infrastructure
www.theguardian.com
And, while Mamdani may oppose voter ID requirements, the vast majority of the "liberal side of the curve" are not opposed - they just want it to be fair.
The Brennan Center supports commonsense voter ID rules, not requiring ID that many eligible Americans don’t have. We can improve the security of elections without compromising citizens’ right to participate.
www.brennancenter.org