User blog comment:X9 The Android/PE Proposal: The Batman Who Laughs/@comment-4708882-20190928153530/@comment-4708882-20190928155205

That shows for a time he struggled with it before becoming corrupted beyond repair. The venom of Scar holds far less value as he's implied to of always been selfish, Batman not so much and even if he retained his intelligence that doesn't mean agency.