For the first 6 months, the legal assumption is that any defect was present at purchase which means - in practice - you can return pretty much any defective item no questions asked.
I personally prefer the EU setup, but I can explain what the GP is talking about.
Back when I was in the US, I could have bought a wetvac from a major chain store, shampoo my carpets, then returned it for a full refund. It would have been a fully functioning item that I gained beneficial use from, but the store would still take the used item back and return all my money.
This comes with a huge caveat. It’s a semi-official store policy, but not a legally binding requirement. If the manager doesn’t like you, then you’re on your own. Granted, the manager doesn’t care that much, because they’re just going to put the used wetvac and sell it to someone else. That person might discover that I broke the unit and they legitimately can’t use it. However, if they don’t have the same magic sprinkles I have (e.g. a title, a midwestern accent, white skin), the store might decide not to give them a refund, even though I’m the one that broke the appliance in the first place.
Since leaving the US, I haven’t had a store try to unload used merchandise on me and I like that I don’t have to put on a performance to get a refund on faulty items, but I’ve encountered other expats who found it a culture shock.
Most instances were in Switzerland as I mentioned, although a few were in the EU. Some weren't defective items but rather unneeded items. Returns based on changing one's mind, even if the item is in unused condition and remains re-sellable, seems to not be a "thing" in at least several European countries whereas American consumers typically expect these consumer protections not by law but by convention.
Another electronic device was defective, and even after selecting this in the online purchase return form I was charged a restocking fee despite returning the item within a few weeks of purchase. Not budging on this and refunding the fee would be unheard of for any serious US retailer.
You have, by law, two weeks to return any item you bought online for any reason whatsoever, and you have 6 months essentially "no questions asked" return for defective items - on top of the actual warranty periods (that, again, are by law).
As far as conventions go, I check some larger retailers from Europe, like Zalando, and they offer a 100 day return policy [1] by convention.
Zalando is famously an exception in multiple countries I’ve been in, to the extent that some shop there because of their lenient return policies. I’m not sure how unique Switzerland is here. It seemed relatively similar in Germany, for instance.
Can you be specific then?
Like, you are aware that you have a 2 week period minimum, and a 6 month period for defective wares. There's also many shops that have more than a 2 week period because it's good customer policy. It's not just Zalando, I checked the next biggest German store (Otto) and they have a 30 day free return policy.
By contrast, in the US it all depends on store policy and, apparently, luck. I had some pretty bad customer experiences in the US, and there was nothing I could do then.
As Steve says in the video, in the US you have no recourse. There's no law. The shop in question didn't feel like being "nice" and the person is out of 500$. For Steve, this amounts to a scam, but the burden of proof is on him.
For specifically this reason, the EU has a law that says otherwise.
Just to check, the parent was talking about online purchases but did you mean physical retail? There you indeed have no legal right for a return, all sales are final as you had a chance to inspect the wares before the purchase.
In practice some stores do accept returns if you have a receipt, but personally I have never done that, didn't know it was even an option before an expat was asking about this online. The default is to sell forward in online second hand marketplaces. Especially gifts you receive, those are never returned (as apparently happens in the US said that expat).
For the first 6 months, the legal assumption is that any defect was present at purchase which means - in practice - you can return pretty much any defective item no questions asked.
What did you want to return and could not?