As a native English speaker I read this as two parts. If it's obvious, the response is immediate and not up for debate. If it's not obvious then it falls in the second part - "any attempt to bypass this policy will result in a ban from the project".
A submarine submission, if discovered, will result in a ban.
Using the phrase "virtual signaling" long ago became a meaningless term other than to indicate one's views in a culture war. 10 years ago David Shariatmadari wrote "The very act of accusing someone of virtue signalling is an act of virtue signalling in itself", https://www.theguardian.com/commentisfree/2016/jan/20/virtue... .
People who talk about "virtue signalling" are usually engaging in vice signalling.
Somewhat off topic, but I can’t believe someone got paid to write that article, what a load of crap. It’s like saying that fallacies don’t exist because sometimes people incorrectly claim the other side is arguing fallaciously.
If you go by the literal definition in the article, it’s very clear what OP meant when he said the AI policy is virtue-signaling, and it has absolutely nothing to do with the culture war.