The FF version works better than I had expected. It's darkifying many of my favorite websites in manner that looks like the site had its own dark mode. So easy to switch on and off too.

It does what it should, and is customizable to either dark or light mode, or reverse certain sites, or exclude them, or only run on specific sites, but the interface is shit and confusing to set up.

Doesn't work in Linux Mint-Cinnamon desktop, as of this date. Easier to use dedicated Linux apps than waste time for this extension. I tried for 5 days before ultimately un-installing it. On Linux, don't waste your time with this.

having white/black list is awesome. Indeed there are plenty of similar extensions, but this feature makes it unique

Works well, but does send telemetry back to darkreader.org (which can be blocked with Pi-Hole or AdGuard Home).

I have also assessed the source code of this extension myself and couldn't find any botnet libraries packaged with it. However, there is a similarly named extension for Edge which is packaged with them, but that is not this Dark Reader extension.