Re: FUD?
No. A good marketer doesn't trick you into doing anything.
What she does is make sure that the thing you might be tempted into buying is available on screen, preferably the bit of the screen you're looking at right now.
On the other hand, site UX is important and uses exactly the same tools. I've implemented tags for our UX team in the past that were all about whether users were following the site's journey comfortably (think [french car brand]'s online configurator. We wanted people to buy cars, but giving people a rubbish experience while mucking about choosing options isn't conducive to actually selling somebody said car.
Are there marketers out there who will try to trick you? Absolutely. Should consumers need to be as paranoid as they are to avoid scammers? No. Will these scammers always abuse any legitimate tool they can corrupt to their purposes? Yes. They always have done.
The problem you're facing is that doing good UX is hard, but you only notice it when it's bad. It's not so different from maintaining the network. People will only notice when it's down and not when it's up.
Shoutouts to the kings of utterly vehemently user unfriendly design - Google. Their search page is the only thing of theirs where the UX isn't a complete and utter disaster.