Apart from using inline code spans for highlighting actual code, you could use them to avoid text is parsed differently, e.g. to avoid that <body> is parsed as HTML, and rendered as . (It is not actually rendered because it is stripped out.) That is also true for text that in Markdown would be rendered in a particular way, such as *example* that without inline code spans would be rendered as example.
In the other cases, inline code spans should not be used to highlight plain words; for that there is already bold, and italic styles, which can be easily obtained using Markdown.
If the suggested edit is limited to that, it should be rejected; if the suggested edit is not just that, it should be improved to remove the inline code spans where it has been inappropriately used.