> Why do people keep getting this wrong?

It's kinda funny to say people are getting it "wrong" when strong/weak typing isn't really defined anywhere or universally agreed upon.

In fact, even "dynamic typing" can be considered to be an oxymoron, since types are formally defined to be a static property of a language. A more correct term would be "uni-typed".

I'm not saying that the meanings you're using for static/dynamic and weak/strong are bad, just that chastising someone for getting them "wrong l" doesn't make sense for terms that are not widely agreed upon.