I know this is semantics, but it's fair. Apple doesn't manufacture anything, they design products and contract out the manufacturing to Foxconn. Basically the same as Google contracting out manufacturing to Huwei, only I think with the Nexus products it was more of a design collaboration than with the Pixel line.
Because Google isn't the manufacturer of Google-branded Nexus devices and, if you bought it elsewhere, isn't the retailer, either.
> Apple manages to support iPhones whether you purchase them from an Apple store or in a back alley for bitcoins.
Apple is always the manufacturer of iPhones.