The "Asking" page in the help centre is standard across all Stack Exchange sites (or, at least, all the ones that we've had a look at).
It is a legacy of Stack Exchange's origin as Stack Overflow, a Q&A site for programming questions - in that context it is clear that "practical, answerable questions based on actual problems that you face" is a perfectly sensible guideline.
As the Stack Exchange family has grown, it has come to include sites where that clear limitation perhaps needs to be little more nuanced. This is not only the case here at Law but also among other sites where there is potential for more good subjective than simply right/wrong fact-based answers (e.g. Role-playing Games, Philosophy, Budhism, Politics among many others).
That said, it remains the goal of all Stack Exchange sites that only answerable questions are posed even if the answers have to start with "It depends ...". We are not and don't want to be a forum and our structure is such that when answers are posted the OP gets to choose the right answer for them and the community gets to vote on the best answer - which may not be the same answer.
The text on the help pages is not within the power of mods to change so we've kicked it upstairs to our Community Moderators.
At this stage, we don't know if this text is something that they can change on a site-by-site basis or if it is a central file used by all SE sites or if it's hard-coded into the SE software.
If the former, we expect that, after consultation, a change can be made, however, we do not expect this to be quick - SE employees are busy and this sort of non-urgent change is way down on their to-do list.
If it's either of the latter two, then it simply isn't going to happen.
We will keep you informed through this question.