I bet rather simplier thing: Some schizophrenic having hallucinations and believing Icke theory of lizard people kiled his children and now they added Q despite it has nothing with Q. No cost to do that.

Brainwashing people into making them killers costs.Usually those really used for false flag (Brainwashed by MkUltra and so) commit suicides. Or if not are never arrested.

January 6 was false flag because antifa provocateurs were released quickly while "useful idiots" among people supporting Q who were identified near capitol are still in prison.

If they will send active shooter and will press disarming agenda then False Flag would be more probable.