That ruling does not get wiped off, you're right it is persuasive precedent, and it certainly can be cited in other cases, even if it's non-binding. It will be

That ruling does not get wiped off, you're right it is persuasive precedent, and it certainly can be cited in other cases, even if it's non-binding. It will be useful. District court rulings are used all the time as cites in novel applications of law like this.