I tried, I just wasted a few minutes clicking "Random Page" and ALL results are about the supermemo software itself, most are support emails republished as wiki pages.
Click one of the articles from the front page. The short articles about the app are because the wiki is also used to answer questions from users of the app.
Fully agree and pretty much exactly my setup. A haproxy container which directs traffic (not only websites, but also syncthing, caldav/carddav etc.) and renews all Let's Encrypt certificates.
It's fun, easy to backup, easy to migrate, easy to just test something and cleanly throw it away. And in practice the containers are pretty much like VMs (talking about personal projects here, corporate is more complicated of course).
And the upfront work is not that much. Do the quick start guide and one or two things. Maybe you don't even need to configure iptables manually, "lxc config device add haproxy myport80 proxy listen=tcp:0.0.0.0:80 connect=tcp:localhost:80" does a lot for you.
"I now believe memory of the basics is often the single largest barrier to understanding. If you have a system such as Anki for overcoming that barrier, then you will find it much, much easier to read into new fields."
Also I just made an account to say thank you - polar looks awesome. I just wanted to start using anki and stumbled upon it.