On the contrary, they do think like engineers. Designers understand how people view things, and interact with them. (sometimes badly but that is another story)
Engineers cant figure out why people would be confused by a totally different OS that can't run legacy apps since you did ad the letters RT at the end of Windows.
How could our customers, although they have been using some sort of Windows OS for the past 20 years be confused... we clearly added RT which makes it perfectly clear that it is totally different.
Engineers would not make that mistake. Used car salesmen would.