I have a system where I have a few “words” and a few “numbers”. I change the word-number combination with each new internet application.
To use your example, I might have quark781, medium804, and quantum128.
For a hacker to get my system, they would need to hack into several application and they might see a pattern. Not as secure as a more randon selection.
And surprisingly, I have many of my passwords memorized.
But good article.