Full Idea
One possible answer is that Zeno is wrong because it is not true that by accumulating an infinite number of things one ends up with an infinite thing.
Gist of Idea
Zeno assumes collecting an infinity of things makes an infinite thing
Source
Carlo Rovelli (Reality is Not What it Seems [2014], 01)
Book Reference
Rovelli,Carlo: 'Reality is Not What it Seems', ed/tr. Carnell/Segre [Penguin 2016], p.14
A Reaction
I do love it when deep and complex ideas are expressed with perfect simplicity. As long as the simple version is correct.