That's quite the claim and a bit misleading. Successful businesses have been firing customers forever. I think they intend on insulting users they want to fire.

I don't fully disagree with you, but I don't think it's correct to suggest you can't be successful with the attitude expressed in that article.

My approach with my clients: if they don't understand or misunderstand something then I failed to explain things to them clearly. Not a big deal, I correct it so we're on the same page and move on. It's a great opportunity for both of us to learn and grow.