No. It's not. The blogpost said that he is able to live frugally because he has no dependents such as children. That's all there is to know. You can ask "why?"

No. It's not. The blogpost said that he is able to live frugally because he has no dependents such as children. That's all there is to know. You can ask "why?" but nobody is obligated to give you an answer. Pushing hard for an answer is considered rude. You may be asking someone to tell you really painful experiences they went through.