There is theoretically a big difference, but in practice, I think that peopel using AI to 'get suggestions' tend to dramatically under-estimate its impact on their writing.
It might feel like just a couple of tweaks, but they add up fast.
Your “in practice” is doing too much heavy lifting here. This comes across as more of a prejudice on people than a fair assessment of the tools and techniques.
I'm increasingly convinced that most people spend most of their lives actively trying to find ways to avoid actually thinking about things. When I look at it that way I figure that either we achieve benevolent AGI in the near to medium term or society collapses due to whatever the asymptotic form of today's LLMs is.
An LLM telling me I mispeled a word isn't changing my voice. Especially when I know the proper spelling and simply have a typo.
An LLM telling me I omitted a qualifier and that my statement isn't saying what I meant it to say isn't changing my voice - it's ensuring what you see is my voice.
Maybe. But it can also help people find their voice. And I'd rather have comments from someone knowledgeable but unrefined with some good guidance than their silence on that same topic.