See, I disagree. Having seen plenty of Claude generated websites and slide decks, to me it just screams "no effort whatsoever". AI sloppypasta for content, if you will.
If I can see within a few seconds that your website or slide was obviously AI generated, I will doubt its content, how much effort (if any) you've put into it, if it won't have hallucinations, and (especially for websites) if it's even real or a scam farm.
I'm not saying every website has to be unique, but at least tell your prompt to use a font or colour scheme or something specific to you that will make it seem like you've put in some effort and make the result stand out from the slop.