Yes, this type of question should be considered off-topic.
Clash of Clans evolves over time, and it makes its money doing so. Any question that targets a specific kind of base is going to be quickly outdated as base layouts and strategies change. Hell in my 6 month hiatus, there's been enough information to where I'd no longer be comfortable answering CoC questions just yet.
I believe that more generalized questions should remain on-topic. For example:
- "How do I best deal with Clan Castle troops?"
- "How do I most effectively farm gold?"
- "What type of attacks should I prepare for when creating a TH8 base layout?"
These kind of questions allows us to provide specific information that applies to a lot of people.
- "How should I attack this specific base?"
This kind of question applies only to the original poster. What limited people others may be able to get would be solely focused on how high of quality the answer may be. Everything in the answer will be based off of that one specific base being attacked, using a specific level of troops and troop capacity.
- "How should I be best prepared attacking TH8 bases in War?"
This question may abstract from the specific details enough to be useful to others who come across the question. If we focus on overall strategies to consider to best prepare someone for attacking a TH8, then there's a lot of information that can help people help themselves.
It's not enough to tell someone "That's a base designed to defeat hogs, those troops are dangerous, so do X, Y, and Z." Sure it may help one person out, but they also might fudge it up and lose anyways. Boom, another useless question that benefits literally nobody.
However we could say "TH8 provides access to these new troops once you upgrade your barracks..... there are base design considerations that could either weaken a base to certain troops or strengthen the defenses to counter specific strategies". That would provide enough useful information for anybody to learn from.