You can't self-host Amazon's shopping, and sometimes they're the only ones who carry certain items since they've fucked local retailers for the last 20 years.
But regardless, people should be allowed to use cloud services without fear of being banned whole-hog for pissing off some suit in Seattle.
So the doorbell was programmed to say "Excuse me, can I help you?" and the driver thought that was racist somehow?
So someone at Amazon decides to take the word of a gig worker delivery driver with no verification or investigation, and shut down all of the customer's Amazon devices? Wow, that's not a bad precedent at all.
The only plausible situation I can see is that he or one of his employees was purchasing consumables used as part of the repair business using the affiliate accounts. More likely is that at some point in the past 7 years someone Amazon associates with his account made a purchase using an affiliate link and they used that as the excuse.