If thats true, then ultimately everything he does is meaningless because no absolutes exist, its all personal preferences and everything is relative, and nothing he does in his lifetime truly means anything. Other than he just did, what he wanted to do, whatever the reasons. The reasons dont matter one bit in the cosmic scheme of things. Good and bad are completely relative subjective terms.
Batman is just a prick who likes to kick the crap out of people. He’s got his wealth and operates outside of society’s laws.