I agree that taxing different forms of consumption at different rates may have a non-zero effect. That's orthogonal to the point I was making and applies to tax

I agree that taxing different forms of consumption at different rates may have a non-zero effect. That's orthogonal to the point I was making and applies to taxes on saving and production as well. You don't pay sales tax on services. Weathly people spend more of there income on ex maids than poor people. Poor people spend a larger fraction of their income on doctors than rich people. If you have numbers present them, but singling out a single stereotypically rich category of spending is silly.