Maybe. Writing is in fact a not-bad way to shout, because whatever is written is only as loud as what the person reading it decides to make it. You could have yelled that last line. Or whispered it, I'm not ordering you one way or another.
But it does looking more like shouting when you do
but even then, you could just say it quietly. Or nothing.
Choose your own vociferousness! If that's not a word, that's OK.