I believe before wearing a signature, one must have the idea of what they are promoting if it is in line with their perspective or ideology so as not to get entangled in the process of promoting a project.as that should be enough reasons to get your
account flagged in this system.
I don't seem to agree with you on this. This is pure advertisement that is understood in the cooperate world. There is always a disclaimer that goes with every product and services and that exonerate the promoters of such products and services as their job is limited to creating the awareness/publicity with the burden of authentication and verification on the targeted users and the regulators.
For alcoholic drinks, you will see statements like "drink responsibly", "not for sale to children under 18 years". Even casinos, drugs and others have their caveats. Have you seen any radio or television station being punished for allowing adverts of substances or foods that are later banned or prohibited? It does not happen as the burden of authentication and approval is with the users and regulators.
Therefore, signature campaigns are no exception because they are also advertisement.