That's nonsense, of course there's a difference. As aforementioned, I'll take an example of a painting. Lets say it was worth $3000 in 1800. But now, it's worth $3,000,000. Does that accurately measure inflation? Did prices of all commodities 300,000%? No. Of course you could argue that that's only a specific example but the logic still stands. There's a difference between price rise and money devaluation.