> think it's not grammatically accurate to use "them" and "they" for a singular subject; That is incorrect. The "singular they" is grammatically correct and

> think it's not grammatically accurate to use "them" and "they" for a singular subject; That is incorrect. The "singular they" is grammatically correct and has been in common English use since the 14th century. (There is a very modern impression that this usage isn't somehow incorrect or non-traditional, but it has zero factual backing.) The only reason to avoid the "singular they" is that it may annoy some people who incorrectly believe it to be ungrammatical.