H2 tags for Main Menu and Breadcrumbs

Problem/Motivation

First of all I would like to compliment the maintainers of the theme. The theme is attractive and loads fast. Thank you for your work.

We used the theme on a project and noticed that the Main Menu and Breadcrumbs (contrib module) are given H2 tags on a page. I am wondering why this is done? From an SEO perspective this is not beneficial.

I do not see this as a bug, so I filed it as a support request. Please change as necessary.