What about plagiarism? If a person hacks together a blog post that is arguably useful but they plagiarized half of it from another person, is that acceptable to you? Is it only acceptable if it's mechanized?
One of the arguments against GenAI is that the output is basically plagiarized from other sources -- that is, of course, oversimplified in the case of GenAI, but hoovering up other people's content and then producing other content based on what was "learned" from that (at scale) is what it does.
The ecological impact of GenAI tools and the practices of GenAI companies (as well as the motives behind those companies) remain the same whether one uses them a lot or a little. If a person has an objection to the ethics of GenAI then they're going to wind up with a "binary take" on it. A deal with the devil is a deal with the devil: "I just dabbled with Satan a little bit" isn't really a consolation for those who are dead-set against GenAI in its current forms.
My take on GenAI is a bit more nuanced than "deal with the devil", but not a lot more. But I also respect that there are folks even more against it than I am, and I'd agree from their perspective that any use is too much.