Why does Peak ask back instead of simply applying the change?

Peak applies nothing it can't read with certainty. A request like “term 24 months, price €3,000” is first read by fixed rules; only the rest goes to the AI. If something stays unclear (which price, from when, which clause), it appears as an open question in the suggestion, and none of it lands in the contract. Every applied change is a new version that you take back with “Undo”.