I think it depends on the context and also not being deceptive. If someone just spent 4 hours trying to root cause a SEV with Claude and they finally have a nice high-level Claude-generated summary of all that work, just paste it and share it. Don't waste time trying to reword it to make it seem like you wrote it. A simple "After spending a few hours with Claude, here's the conclusion about what the problem was: [paste]".

On the other hand, if you send someone a very personal and heartfelt message and receive a reply like "Yeah, it was so nice spending time with [niece] today!", well, that's a bit different...