Is it wrong to put header tags inside WordPress help tabs? [closed]

The WCAG Guidelines state (emphasis mine):

To facilitate navigation and understanding of overall document
structure
, authors should use headings that are properly nested (e.g.,
h1 followed by h2, h2 followed by h2 or h3, h3 followed by h3 or h4,
etc.).

This implies that the reason they should be in the right order is so that people don’t get confused by the structure. As you’re in a pretty tricky situation here, my personal opinion is that they are more likely to be confused by a complete lack of headings than ones that are out of normal sequence so I’d say leave them in.