We should allow as much work as any well-meaning non-OP editor is willing to give away for that post. Within very few and wide limits.
A significant well-meant edit is a chore the editor offers, why should we prohibit or inhibit this generosity?
Questions can be edited, and for a reason. Sometimes OPs change the content and aim and scope ...
Questions that are quickly closed are clearly low-quality. As a low quality question, it may be edited to improve content, if the editor can make sense of the question.
The user asked two questions:
How accurate is the statement: racism breeds war?
Are there historical examples?
The first question is opinion. The second question depends on a description ...