It is the same problem on all help forums, StackOverflow, etc. and as far as I know there is no solution. Especially here, the “Python Help” category (Python Help, formerly known as “Users” ) is kind of the catch-all category so you will find all kinds of posts, many of them are not actually asking for help.
We are not on StackOverflow. Over there there is clearly one top-level entry that is the question (all details are expected to be in this one post, no more, no less, with a minimal reproducible example), there is not much room for back and forth discussion on StackOverflow (asking for clarifications, etc.). While here I feel like this is the opposite, back and forth discussions are welcome (if not encouraged).
But in principle I agree with your proposal. If it is possible to have templates, we could try it. But then we should make sure to have one category where the template makes sense. As you can see in other posts, it is not entirely clear what is the scope of the Python Help category or what it should be: