Nothing personal, but I tried to follow along until just before the 7:00 minute mark where he called the spark plug terminal an "electrode". I'm not sure how I lasted that long. A nearly 21 minute video on this is absolutely ridiculous. A simple webpage with a few images and some text is all that is needed to call out the differences and what to look for when trying to determine legit parts vs counterfeit.
Here is a simple document on counterfeit coil packaging. Way easier than watching a 20 minute video, right?
https://circuitboardmedics.com/content/ford-countrerfeit-coils.pdf
Here's another simple doc on spotting fake Denso plugs.
How To Spot Fake Denso Iridium Power Spark Plugs 2017
As for Amazon, you still have to be very careful because of the way Amazon handles their inventory and mixes the inventory that resellers send in (to be fulfilled by Amazon). It seems to happen more with expensive items, but apparently it is worth it for scammers to fake items that only cost a few dollars each.