Drupal SEO: What impact does HREFLANG have on pointing to a redirected URL for EN-US?

I am doing an international SEO job on a Drupal site. I realized this on the home page of EN-US:

Take special note of the subfolder "/ home" there. They tell me that Drupal needs this and is something standard. But if you go to this URL, it is redirected twice. Once to the home page (307) and once to the https version (301)

The English site is the "default" site. The other languages ​​have a perfect combination for all URLs in hreflang and canonical directives. (/ france, / germany, / etc.)

From the SEO point of view, discrepancy and redirects annoy me.

What impact would these differences have for SEO?