Doesn't Stack Overflow also answer questions about "programming tools"?
Yes. It does. But that doesn't mean that every question will get an answer. Sometimes there isn't an answer or no one has the expertise or interest in answering. Some questions are just not well-written or unanswerable because they are unclear. Often those posts will get downvotes or will get closed.
Is there any Stack Exchange website that will more willingly answer such questions?
No. Stack Overflow is the appropriate place. Try to improve your question, if it is super clear: add a bounty to attract views.
Is Super User a more appropriate site for questions about IDEs?
No. It will get closed for sure.
It is clear to me that my SO question is flawed.
Maybe you should try to see it from the perspective of the user visiting your question. What would you need to answer the question? Try to improve your question rather than blaming someone else.