This is one of the most intellectually dishonest takes someone can have on this topic.
Games should not have to disclose their AI use simply because for whatever reason, there is a horde of people who rush to shit on any project that uses AI without giving it a fair shot.
The gameplay and the experience is what a game should be judged on, not the tools used to create that experience. If that experience was created with the help of AI, you shouldn't feel less than because of it.
Little by little there will be breakout successes of games that confidently state their use of AI. It will become normal and expected because they are tools to be used for a purpose. Sure you will have some slop along the way, and there will be people who benefit from it that do not deserve it, but this will be the exception, not the rule.
Inevitably when that happens, people with these radical positions will fade into irrelevance where they belong and good games will surface to the top like they always have.
"Gamers shouldn't be able to see if a game was made with AI"
Why? Aren't you proud of your fake work? Why wouldn't you want all your customers to know about it?
"Because they won't buy it"
You didn't work for it, so why should they pay for it?