Why does TV Tropes (and this wiki) have weird sentences like "Unusually uncommon" and others like that? I don't understand, and i'm sorry for posting in the wrong forum.
Topic on Forum:Trope Talk
It's hard to say, but I'd wager it's just the cumulative effect of thousands of different people editing the articles over the years. Last time I looked, several years ago, TVT had 60,000 registered users. If only 1% were actively editing the wiki, that's still 600 different voices and writing styles. It's not surprising that the average is going to sound a little odd.
And naturally, since we forked off of TVT, we inherited all those oddities.
I'd agree. Though in the case of TVT, at least in the more frequented/frequently edited pages there tends to be a more predominant group of voices directing them.