You disagree with the concept? Walmart has 1.8% of sales embedded as taxes. Suppose Walmart's suppliers have another 1.8% of their sales (measured as a percentage of retail value, just for convenience so it's fair to add the percentages together) embedded as taxes.That wouldn't be cascading taxes, that would be accumulating taxes. Cascading happens when you tax a tax on multiple levels. That isn't happening here.
I see that Nightie is illustrating his lack of understanding of what the cascading example shows. that's pretty typical.
I also wonder if he really knows what "execrated" means ... he's such an onager!!