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And WG21 has a way of enforcing it: ISO will probably kick anyone out if
it is ever found out using AI inappropriately.

There are many more smaller official and unofficial ways (as I have heard):

 - your papers starve in the working groups

 - the same ideas with you as author is less succesful, as if others present the idea

 - you have difficulty getting co-authors

 - no official positions for you: working group chair, hosting a ISO meeting

 

So don't rely on official statutes and play with good faith as far as possible.

 

And temptation for advantages is not a new concept in our generation of humanity:

 - There are people in roles, forbidden to look at GPL-licensed code

 - When writing a PhD, you may not receive help and have to cite all your sources

 - If you receive money and have a conflict of interest, in many contexts you have to state it to avoid corruption, even if you have an advantage out of it