To make his case, Wells began by linking to the Wikipedia entry on scissors, which states that the earliest known scissors were made in Egypt or Mesopotamia sometime between 2000 BC and 1500 BC. This would place the invention of scissors well after the Flood, which — for those who believe it was an historical event — is thought to have occurred no more recently than 2349 BC, and possibly much earlier.
However, Wells did not object to the idea that Noah may have used scissors, per se. (It is not clear whether Wells thinks a gap of a few centuries is no big deal, or whether he simply confuses “2500 BC” with “2500 years ago”, thus dating Noah to some point long after the invention of scissors.) Instead, what bugged him was the idea that Noah could have had a cut that looked like it was the product of “electric barber shears”.
My only contribution to the debate would be to note that we don’t know yet what kind of technology the people in Darren Aronofsky’s film will actually have at their disposal. We know that the film will depict angelic beings known as the Watchers, and that these beings, according to the Book of Enoch, taught humanity “arts and technologies such as weaponry, cosmetics, mirrors, sorcery, and other techniques that would otherwise be discovered gradually over time by humans, not foisted upon them all at once.” Presumably these technologies were wiped out by the Flood. And maybe, just maybe, these technologies could have allowed for buzz cuts, too.
For earlier examples of this sort of nit-picking, see my blog posts on One Million Years B.C. (1966), in which I was distracted by Raquel Welch’s eyebrows, and 10,000 B.C. (2008), in which I was distracted by, well, just about everything in that film.
November 24 update: Parts of this blog post have been re-written since it was first posted, partly because I realized I misunderstood one of Wells’s original points.