A lot of scholars use ambiguous language, phrases etc nowadays because they feel it suits the context. For example, Shaykh Hamza was not advocating that women can lead men in prayer, he just wanted to show such opinions may have existed previously even if they are not relied upon or mean to be followed (and in fact, he quoted the position incorrectly but many scholars make mistakes like that). The use of ambiguous language differs in extent amongst some scholars though but just take a look at Shaykh Yaqoubi's interview on Sky recently where he was talking about democracy and so forth and the video of a Deobandi scholar that was posted on this forum where it seemed as if he was anti-Taliban... the point is, Shaykh Yaqoubi was not advocating western democracy and the Deobandi scholar (whose name I forget) was not saying he DIDN'T support Taliban but they used ambiguities in language and sentence structure to get them out of trouble. People may or may not like such an approach but Shaykh Hamza isn't the only one using it.