What if we had busted in and there had been only one cultist there, and then we wouldn’t have the name of the inside man at the cathedral.
This method is riskier for sure, but the rewards are far greater.
You went into a cellar to fight (I think 5.. maybe less? Maybe only 3 actually) some men on your own after bogenhafen and almost died. For basically no reason. This is not only safer, but the potential information we can get better.