I tried several of these but never really got see the lateral thinking because the solutions were trivial on the first guess. It feels like no effort went into the contents of the mysteries themselves and they were sourced using AI.

Which is to say, that they're all extremely shop-worn cliches. I think this shows the false allure of the AI product. The creator's low standards for content take what could be something interesting and a perfectly nice looking site and turns it into something which only superficially appears to be interesting but has no value.

I've noticed this a lot with AI-based products: even their creators don't find the experience good, but they are imagining there exists an audience which doesn't value graphics and doesn't value the written word.