"Vocalizations" is a rare word for me, and not very specific, it seems to mean anything produced with the voice, from words to shouts to song. If I read that, I would think it actually meant coprolalia, while I think what the source means is that he tends to express himself heatedly in discussions, which is why I liked "outburst", which, to me, means passionate words, but not nonsense. A side comment; when I was expanding the article, I actually wrote to him, and asked if he would be willing to release a freely licensed picture. He wrote me quite a lot about how the Wikipedia mistreated him, and after a few back and forths, wouldn't release a picture if I couldn't guarantee our article would name specific Wikipedia editors who mistreated him. No obscenities were involved, but I could almost read him becoming heated as he typed.  (squeak)