For other pages, the <h1> should usually attach to the primary heading for the page itself. So for example on the Editorial Team page it should be on the "Editorial Team" title. On an article landing page, on the article title, and so on.
Also, it's possible for the journal logo to include alt text. It's not being added here but you can see it added in the default template here:
If there is no alt text, giving the logo an <h1> will lead to an empty heading tag, which will be a SEO and accessibility issue, so we usually fall back to the journal name on the homepage.
cc @Vitaliy-1 on this comment as well. We should probably audit each of our themes to ensure the h1 and alt text is applied properly. Happy to review code if there are any questions.
Regarding the
header.tpl
template file, @NateWr commented: