Yes, the wording is a little weird. Yet, still it doesn't make sense to make the assertion that a user is vulgar because they might have said the word 'shitty' once or twice.
Seems like it's mostly just sticking to a template. Though I do think it's a bit off here. Apparently, I'm in the top 33% most vulgar and often use words like "fucking". To the best of my knowledge, that maybe happened once.
Nonetheless, this is pretty cool. I'm loving the graphs.