Was Lauda not blacklisted because of his shenanigans when the flag system was implemented?
No.
This was a rhetorical question.
Lauda should be blacklisted for what happened when the flag system was implemented, along with his long history of abusing the trust system, among other reasons why he is untrustworthy.
Blacklisting Lauda would be mostly symbolic because he almost certainly had the foresight to either build up or buy alt account(s), some of which are likely unknown to the administration. Further, people who are separate from lauda have noticed how he made a name for himself, and are mirroring his previous actions, and are trying to emulate him in an attempt to achieve similar results. (I think lauda did some other things that others have not picked up on that were not genuine on the part of lauda, that cemented his support among certain very influential people). My opinion is the damage to the community caused by lauda is irreversible.