Why would you say that? What are the alternative? Saving? That's worthless, creates no value. (And any increase in money available for investment from savings can be duplicated by changes in FED rates or rules.) Paying off debt? Again, creates no wealth, but it at least it reduces the overhead of servicing the debt.
Unless American consumers are at the point of having such high personal dept that spending more is counter productive, I think more spending does equal "good for the economy". This of course assumes that the economy isn't already running at near 100% and that waste and inefficiency aren't unusually high.