I think the vast majority of criminals didn’t set out to become criminals. Circumstances presented the opportunity and they took it. Hence entrapment being (technically) outlawed, lest the police and/or media create crimes for their own profitable purposes.

While his ADHD probably does provide relevant context (the grandiose ambitions, and inability to keep tabs on reality or paperwork), he knew what he was doing was criminal and buried himself in Effective Altruism to provide the self-justification. It’s for the greater good, yaknow (where the greater good is getting filthy rich while promising to use the money for good, eventually, honest).