> Their interest is irrelevant in the face of technical impossibility.

I'm responding to "If the data was separable in this way, you would equally be able to train an AI to mask those signs.": yes, if you wanted to you could, the big names clearly don't consider masking to be a priority.

> But it’s absolutely unusable for something like “did someone cheat”.

This is the one case where I'd most expect it to succeed:

I suspect most of the people who do want to cloak-to-cheat, don't have the skills to do so; I also suspect most of them are so unaware of what they don't know that they won't even ask an LLM to write cloaking software for them.

You’re overthinking it. There will be end products specifically for this and they’ll be trained by their peers / the company.