tl;dr:
> It’s unacceptable for a tool to sacrifice an iota of clarity, coherence, meaning, quality, etc. for the purpose of (watermarking)
And an example of the impact of watermarking on word choice [0]:
> The results of the study were quite [important || significant || substantial || notable]
The meaning of the sentence to changes slightly even in just this tiny example. Imagine the degradation when applied across an entire response!