Saying something and then pretending you actually meant a different thing is lying. It shouldn't be up to the consumer to understand the minutia of an industry and intuit whether "unlimited" actually means "unlimited".
Methinks someone at google is angling for a promotion behind a good ole rug pull knowing people will pay rather than have to shift that data around.
Consumers don't need langauge lessons they need to learn business is not to ever to be taken at their word without contracts & legal counsel involved. They are zero-trust players.
Unlimited Coke refills at a soda fountain aren't unlimited. The human body is naturally limited by how much it can drink. Elide that natural limit and you still butt up against a person's stamina for doing objectively stupid things. Elide that limit and you're still limited by the amount of syrup on hand at that location.