“Every system I build for them gets ignored.”
You built a good system. They ignored it. You built a better one. Same result. It isn’t about you. An imposed system reads to an ADHD brain as one more demand, and a demand carries no dopamine, so it dies the second your attention moves. A system they designed carries dopamine, because designing is a problem to solve and a problem is interesting.
You are not lowering the standard or handing over the wheel. You are moving the one part that has to be theirs for it to run: the how. Name what has to be true, then let them build the way there, and hold your hands still while it wobbles.