Comment by minimaxir

AI-generated prefill responses is one of the use cases of generative AI I actively hate because it's comically bad. The business incentive of companies to implement it, especially social media networks, is that it reduces friction for posting content, and therefore results in more engagement to be reported at their quarterly earnings calls (and as a bonus, this engagement can be reported as organic engagement instead of automated). For social media, the low-effort AI prefill comments may be on par than the median human comment, but for more intimate settings like e-mail, the difference is extremely noticeable for both parties.

Despite that, you also have tools like Apple Intelligence marketing the same thing, which are less dictated by metrics, in addition to doing it even less well.