The link you posted seems to fundamentally fail to contradict the OP. The link states "banks do not lend out their reserves" - which is true. They lend from their deposits, which is exactly what the OP was saying.
If that's not it, then someone needs to explain it more clearly.
Banks don't lean from deposits even in the "official" narrative.
A bank that needs to lend money that doesn’t have it's going to use the interbank system in order to get "reserves" from others banks.
The idea is that the causality is inverted. Banks lend and then search for reserves. If you see it this way, you realize that there is not constrains in how much money they can lend (except how expensive is to find reserves).
If that's not it, then someone needs to explain it more clearly.