Still, I don't like how that sounds.
I've made a version of mine based on what you said.
Same idea, slight modifications.
User posts a question. The question can be freely deleted by the user who posted the question until someone answers.
When someone answers, the user can not freely delete the question, but the delete button will send a request to the moderation team to delete the question. The user is informed about this. Meanwhile, the question is "hidden", meaning nobody can find it through the search box or find it in the page unless they contributed on it (questioned, answered, commented).
Moderation team decides what to do. Not users.
About answers and comments:
Freely delete answers and comments.
Now I'm not a dev of the page so you and the team decide how to manage it.
Just part of the community.