[quote=@Legend]
<Snipped quote by whizzball1>

I still wish we had a Foundation of Grammar that defines what is correct and incorrect in English. I don't like fluidity.
[/quote]

So do I. But because there are so many factions, contradictions abound, especially in this case, where Oxford, Cambridge, and Chicago support the usage of "they" as a GNSP, but the American Psychological Association, Purdue University et al. oppose it. Every faction seems to contradict every other faction in some part of their styles.