Yes, market pricing is reactionary. Other sellers might also see increased sales when Amazon raises prices.

Probably why Amazon stopped using this pricing model.

It’s literally anyone’s business model in a capitalistic market, it’s hilarious that people are shocked and offended

I don’t think you understand what price fixing is. Adjusting prices to market competition is not price fixing. This same concept can also lower prices if another vendor is selling the same item for less.

For instance, Amazon frequently will lower prices to match chewy and Walmart

Most people don’t know how retail pricing works, so when they read an article like this, they’re shocked and offended