I may have a better eye for it than most, all the way to having made my own browser extension to turn justification on paragraphs off. However, if I do turn on

I may have a better eye for it than most, all the way to having made my own browser extension to turn justification on paragraphs off. However, if I do turn on left-aligning on the linked example, I get plenty of very jagged right edges—which means that with justification all that uneven space gets shoved between words.