Why do you accept that it’s ok to sell harmful products?
Amazon is a $1 trillion dollar company. It’s not some guy selling things out of the trunk of his car. It should be reasonable for me to assume buying something there is safe.
They are a trillion-dollar company, but what we're observing is that the market isn't hyper-thirsty for safety guarantees and is willing to accept their current climate for service convenience. Other stores will let you make a different safety-convenience tradeoff.
Fire risk batteries being harmful, for but one example, is hardly "subjective".
Apparently in your world, it's perfectly okay for Joe Johnson to create an Amazon merchant account called "Apple" and sell me and sell me defective products under the Apple label.
Amazon is a $1 trillion dollar company. It’s not some guy selling things out of the trunk of his car. It should be reasonable for me to assume buying something there is safe.