They didn’t walk it back. Pixel 1 still has unlimited storage.
And for some time, other devices did as well. And then they changed it. Would some other term than “walking back” describe “they offered a good deal to customers, and then changed it to a less good deal” better for you?
Do you like work for Google or something? Probably not. The handful of people I’ve met who work there aren’t nearly this zealous about defending it.