You do realize the whole discussion is about what terms to use for differentiating between GPL-like “restrictive” licenses and BSD-like “permissive” ones? Saying that both are “conditional” really doesn’t help anyone.

That's fair, I suppose - but going back to the word restrictive, you could also frame the requirement for attribution as a "restriction."

DeVault suggests the term "reciprocal" at the end of his post. Another term often used is "share-alike." Both of these terms, I think, more accurately hint at the exact conditions of the grant without negatively framing it as a "restriction."