This study doesn't show that molnupiravir (rNHC) is genotoxic at levels effective for treating covid. Dosage of 1µm reduced COVID+ cells by 15x, while 3µm removed the infection entirely. [2] 1µm and even 3µm dosing didn't lead to any statistically significant genotoxicity, only 10µm showed effects [3].
The authors know this, because their conclusion is that the risk of genotoxicity "might not be zero." They have not demonstrated that therapeutic doses cause any statistically significant increase in mutations.
It is misleading but not directly wrong. Excessively high doses lead to mutations, but that's true for aspartame too. Nothing suggests that a therapeutic dose for a short time will give you cancer any more than X-rays from plane travel (i.e. there's a causal mechanism, but it's not statistically significant.)
https://pesquisa.bvsalud.org/global-literature-on-novel-coro...