This goes against the recommendations (preloading should be opt-in). Putting it in the example makes it likely that people enable it without knowing what it means.
https://hstspreload.org/?domain=peertube.social#opt-in
# Tells browsers to stick with HTTPS and never visit the insecure HTTP
# version. Once a browser sees this header, it will only visit the site over
# HTTPS for the next 2 years: (read more on hstspreload.org)
- #add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload";
+ #add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
access_log /var/log/nginx/peertube.example.com.access.log;
error_log /var/log/nginx/peertube.example.com.error.log;