I was flipping through Puget Sound's free music theory book, and saw this page https://musictheory.pugetsound.edu/mt21c/i-VII-VI-VII.html
Why did he write the i–VII–VI–VII progression as Am–G–F–G instead of Am-G#-F#-G#. And why did he not write out i-bVII-bVI-bVII ?
He writes out a similar progression but notes that it is 1-b7-b6-5 and I find this confusing.