I don't know if I go so far as to say objectively wrong but definitely felt off. And other approaches would probably have been better. If it is a question: "Sh

I don't know if I go so far as to say objectively wrong but definitely felt off. And other approaches would probably have been better. If it is a question: "Should we do X?" They are asking for an opinion about if it should be done or at least some sort of conversation. Not asking for you to make a decision. Just state an opinion based on what you know and follow up. "I doubt it, it would be a large investment of resources that may not lead to noticeable improvements. Why?" Is it rude to ask why someone is asking though? Understanding context can be good. It might be fine to ask something like "Why do you ask?" to get it started, before answering. Then, if relevant, follow up with those in depth questions. But just jumping into technical details feels like they are meant to shut the initiator down. If they come to you and say: "I think we should do X." Then those questions make more sense. "Why?" is still probably enough though. Let them elaborate on their thought process. And if it really is just they say something about it in a blog. You can explain the trade offs and guide them with your knowledge.