Has anyone said you will have a hard time spotting them? Because I did not. I pointed out that when you say you can, it is an instance of survivor bias, and it is,
whether you are good or bad at it as long as we don't have data to tell whether your assumptions were correct.
We still don't know whether or not you're good or bad at picking out AI images used in actual campaigns, because we have every reason to assume at least a reasonable proportion of AI images used in actual ads will have been through an editorial process that'd rule out a lot of the easily recognized shlock, and so a test that does not use images that have been through the same selection process is meaningless.
I have no doubt you can recognize some. You may well be able to recognize all of them perfectly for what I know. The point was not to argue you can't, but that your impression can't reliably tell you, because you'd be likely to think the same whether your accuracy is high or low.