The documentation doesn't recommend this approach to create a custom section:
https://docs.umbraco.com/umbraco-cms/customizing/extending-overview/extension-types/sections/section#manifest-with-empty-element

But I don't see it is necessary wrong using this with third party content e.g. Hangfire.

I haven't checked if a single section view removes the content apps:
https://docs.umbraco.com/umbraco-cms/customizing/extending-overview/extension-types/sections/section-view