I wouldn't say so, rather you need to balance recovery time and evidence preservation. A good incident manager will give the service owning team a chance or two

I wouldn't say so, rather you need to balance recovery time and evidence preservation. A good incident manager will give the service owning team a chance or two to debug, but not let them fall into the trap of needing to understand the problem fully before attempt a clumsy potential fix. And of course will take into account the total business impact of the ongoing disruption and the known and unknown risks of the proposed clumsy fix (it could make things worse).