A perhaps unusual way in which I like to use Anki is to periodically remind me of thoughts that could come in handy in many situations, yet that have no particular “prompt” that should trigger them.
the image shows that you don’t have a distinct card front, so how do you judge whether to pass or fail the card?
Is it by how familiar the thought is, by how readily you think you would remember this when you need, by looking at the projected intervals and deciding which interval you want, or something else entirely?
I think you might have misread that part, the post is advocating 10-20 review(!) cards per day and only 1-2 new cards