Overlayed dnf debug-info fails on silverblue

I have overlayed dnf into silverblue so I can short-term install debug-infos with usroverlay.

dnf debuginfo-install fails.

sudo dnf debuginfo-install at-spi2-atk-2.38.0-1.fc33.x86_64
No such command: debuginfo-install. Please use /usr/bin/dnf --help

Package dnf-plugins-core-4.0.18-1.fc33.noarch is already installed.
cat /etc/dnf/plugins/debuginfo-install.conf
[main]
enabled=1
autoupdate=0

Why is that not working?