This comment motivates the following.
Tagging grammar questions temporally (by centuries) aids users in finding the temporal period desired. For example, English grammar has certainly changed.
I don't consider it useful to specify a particular century on ELL, for maybe two reasons.
Instead, it's better to use much more general tags, like archaic. Tags like early-modern-english are dubious; on the one hand, they do represent a scholarly classification that is qualitative (and thus avoids the first problem), but on the other hand, they're technical jargon that isn't all that easy for a learner to guess correctly, so the second problem is still in full force.
In the question given, I'm not entirely convinced the usage even is archaic in the first place, so the tag — any such tag — seems dangerously premature. That said, misconceptions about what is or isn't archaic are reasonably on-topic, so I suppose it can stick around.