I'm going to anticipate your reply and say : Drivechain does not change monetary policy.

I am going to further anticipate your reply to that and ask you: what do you mean by monetary policy ?

You mean the 21 cap and Halving supply correct ?

You also think monetary policy includes miner incentives. It does not. Miners and changes that only affect them like drivechain are security policy. Drivechain improves security policy.

Monetary policy begins and ends at the supply cap and halving. For instance, the difficulty adjustment IS NOT MONETARY POLICY. Its security.