I'm with you on all of this. I use the term "unacceptable" as a conditional. If "invariably" actually means close to 100% of the time, then I think it's unaccep

I'm with you on all of this. I use the term "unacceptable" as a conditional. If "invariably" actually means close to 100% of the time, then I think it's unacceptable. And if not unacceptable, then certainly inconsiderate. I am using conditional logic here because, like you, I have no idea what "invariably" really means here. Writers have a tendency to throw around words that sound good, without always considering the true extent of their meaning. As a sometime-writer, I suffer from this problem myself. "Invariably" is a tall claim, which is why I'd like to see the evidence for it before rushing to conclusive judgment.