For anyone planning to address this issue: https://github.com/mgalgs/gnome-shell-system-monitor-applet is the currently actively maintained fork of the unmaintained https://github.com/paradoxxxzero/gnome-shell-system-monitor-applet.
The following commit message from the fork should clarify things. https://github.com/mgalgs/gnome-shell-system-monitor-applet/commit/bd66c2de4f6f6deb6f19bd4e182eeb4e9e4dd627
