> if someone said "fast fashion is badly inefficient", but then cut down a bunch of trees to build their home, or sometimes wasted food, that would not be an example of hypocrisy

Uh... sure it would?

You lost me. I don't think there's a "hypocrisy claims about arguments based on efficiency must be about the same general category of efficiency to qualify as hypocrisy" rider on the definition of the term in common use. But I guess I'd be willing to entertain a cite.

Certainly as I and most people understand the argument, yes, it's hypocrisy.