A screenreader user would typically use the headline-based navigation to move through views lists. That mode does ignore the load more button (semantically lacking a headline), thus giving the impression that the list has just ended there.
Futhermore, the unnecessary list markup (never containing more than that one item) creates avoidable noise.
We've conducted thinking aloud tests with screen reader users and this is the recommendation:
<h4 id="pagination-heading" class="visually-hidden">Load more</h4>Well aware that this can have legacy implications. Current projects might base the styling on the list markup.
Needs review
2.0
Code
It affects the ability of people with disabilities or special needs (such as blindness or color-blindness) to use Drupal.
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
There's an MR for review.
In addition to applying the patch from #10, I added support for the views pager Heading Leveloption instead of a hard-coded h4 because the accessibility checks were reporting an error about the skipped heading level.
I've tested this manually on D11.