Oh come on, it was a startup. The same people who made the tool told the lies (if that's what they were). Now under Google, this is still the case - the original founders now lead the Firebase department if I'm not mistaken. I'm pretty sure they have influence over the marketing messages.
And then people are surprised when I advise them to avoid startup products.
It's the classic tragedy of the commons; lying your way into an acquihire is a win for the successful founders, and a loss for the everyone else in the ecosystem, as more and more people grow sick of being played that way.
You basically have 2 weeks to implement user management functionality? An acquisition so hot they basically say fuck you to all customers. Amazing.
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Also, Google's Firebase acquisition was many things, but not an acquihire.