Both the "good" and "bad" quality examples contain subtitles with no discernible difference. All examples contain legible subtitles. So where's the "nosedive"?
There's clearly some anime-specific context and nuance that is NOT communicated with context-less screencaps.
Perhaps the article wasn't written for someone unfamiliar with anime, and I'm not meant to understand, but it would be helpful to have the difference explained. Not to mention the improved accessibility for screen readers or folks with sensory processing issues like myself. At a minimum, marking up the image would be helpful. Circle things. Arrows. Help me understand, don't drop me into unfamiliar territory and leave me to guess.