HSTS can enhance security, so normally we’d like to have HSTS working. If the Wget HSTS database file permissions are incorrect, wget may emit messages like:

Will not apply HSTS. The HSTS database must be a regular and non-world-writable file.
could not open HSTS store at '~/.wget-hsts'. HSTS will be disabled.

Fix: make the .wget-hsts file have normal file permissions:

chmod 644 ~/.wget-hsts