I’m asking why it’s called capitalizeListTitles. The doc says:
Whether to capitalize automatic list titles
By “list”, I assume it means a list page, but what does that have to do with tag names? Is it because tag names are used as terms, which are list pages? If so, would this then apply to the capitaliation of all list-like pages, like home pages and section pages?
When an _index.md file is not present, Hugo creates an automatic page title for page kinds section, taxonomy, and term. Whether those titles are capitalized is controlled by the capitalizeListTitles setting in your site configuration. This will obviously have an impact with constructs such as:
{{ with .GetTerms "tags" }}
<p>Tags:
{{ range . }}
<a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a>
{{ end }}
</p>
{{ end }}