I think they might also mean “room for abuse” as in people abusing said guidelines to attack people or subjects they don’t like though erroneous reporting and poor enforcement of those guidelines (you already see it happen with something like community notes), abuse can go both ways with something like this.

You also highlight an important point in that people who create the disinformation already know how to get around barriers and telling them what is and isn’t explicitly will just make their job easier, so in essence such rules and guidelines only hurt anyone else, the people who would be on the receiving end of abusive reporting, or abuse of the correction systems.