Idk what you mean by "interest doesn't exist as money."
If someone can grant you access to a car or a house or a tractor & charge you for the time that you have access to any of those things, why can't someone grant you access to money to buy any of the above & charge you for the time you have access to their money? Who is going to stop this from happening?
I do think there will be much less money lending & more lending of physical capital, like cars & tractors, because the value of saving & reducing upfront costs is higher under a Bitcoin standard. And the risk of loaning a bearer asset form of money is probably higher than loaning a vehicle which can be tracked & disabled & more easily retrieved by force. But lending is not inherently evil or destructive. It is just risky & prone to corruption.