I never said he wanted to get big. I never once implied that. Are you telling me that if you simply eat food you will suddenly become 250 pounds of solid muscle?
Implies that you are basically telling him that if he wants to lose weight, he needs to not eat.
And this just adds to it.
And now you’re basically asking him to stress his cardiovascular system without feeding it anything.
Regardless of what your intentions may have been, you didn’t come off in a correct or intelligent manner at all. Bottom line is you basically told him to go out and do cardio and eat celery. It’s perfectly achievable to lose weight without doing any form of exercise to a certain extent, just a lot slower and less rewarding in the end.
His question isn’t off topic at all, this is “Ask a Bodybuilder”, not “Aspire to become a bodybuilder or get out”. It’s perfectly relevant to the thread.