I did not say that. I wrote an entire wiki article describing what usury is and said that I am generally against charging interest. That is because fixing the interest and then fiddling with the monetary supply, so that inflation/deflation effects the returns, is how they get out of the clause through a back door.

They can't do that as easily with Bitcoin. So, tell me how that makes sense in a rapidly deflating currency on a mid-term or long-term contract?

Obviously, it is possible for a week. Maybe a month, for a small loan.

But... 1 year? 5 years? 10 years?

No. It is economic nonsense.