If you think half an inch doesn't make a difference, try going down a familiar set of stairs wearing only one shoe.
Thursday, May 12, 2016
Ngram only returns book results, and only through 2008. If the corpus was all published material through 2016, I bet the red line would cross the blue line.
Yes, yes, living language and all that. But enamored with grates almost as much as singular they.
P.S. Enamored by? No. Not budging on this. That's just wrong.