One thing I found useful about this type of tool is being able to quickly see how the content looks after being converted to HTML. Even so, I would always do a final review of the code, mainly to remove unnecessary styles that may come from Word and to check titles, lists, links, and paragraphs.
I've also been doing some tests with pages that heavily rely on text presentation and formatting, such as Şekilli Nick and زخرفة أسماء . In these cases, cleaner HTML makes a difference in maintaining an organized structure and avoiding display problems on different devices.
For beginners, I think it's helpful to compare the visual result with the generated code. This helps to better understand which HTML elements are actually needed, instead of simply copying all the automatically produced code.