Sellers get a larger margin on eBay. You can’t get perfect but you can get better. The return/exchange policy is a small tradeoff for not supporting one of the most evil corporations in existence. It’s also kind of a selfish thing to care about, most of Amazon’s returns are just trashed into the landfill so it’s not like it’s green or something.
How is that easier? That’s just only very slightly harder, not easier. Most sites will not have such sophisticated logic. And anyway, the purpose is to suss out which websites do this kind of tracking and avoid them entirely, not to thwart the tracking.
Meanwhile I installed the User Agent Switcher extension for firefox to change my user agent every 30 seconds to something random to avoid tracking. A few websites don’t accept it. I just quit those websites and find a non-billionaire-owned alternative like Kagi or Fastmail. So far it’s working out well.
“Cracking down” is the wrong verbiage. More of a “self-immolating.”