This is true, it’s not an individual datapoint. When smartphones, like the iPhone, originally debuted carriers had a conniption fit because they couldn’t preload a ton of garbage apps to help subsidize the cost. Apple has been able to avoid this, but for your average smartphone this is absolutely how both the manufacturer and carrier are able to sell them so cheaply.

Every experience may not be as bad as the one the OP had, but it’s surely well within reality. Both carriers and handset manufacturers are glad to sell anything and everything about someone to make a quick buck. They’ve literally been doing it for 25+ years.