This reads like propaganda. Amazon has no business de-listing products because of their price elsewhere.
If it wanted to be pro-consumer, I don't know, it could warn the consumer the price is lower somewhere else, and point them there, like a good search engine of products! Sounds ridiculous? Yeah, because those claims are a bit ridiculous too.
Rules around pricing like that are standard retail practice since well before the internet even existed.
I don’t like it, but it is Amazon’s web property and they can do whatever they want. They could put up political banners on the top of their website, but I wouldn’t recommend it with how divided the country is.
"…[Amazon] could warn the consumer the price is lower somewhere else, and point them there…"
That would be a miracle.
(On 34th Street.)