[KronisLV]

> why not just attach a real debugger?

Probably due to no direct access to the environments, whereas there being less organizational resistance to toggling logging levels... assuming that the issue is even easily reproducible instead of "Okay, this happened once and cost us X$, it was pretty horrible, we don't know exactly why that happened but fix it before it happens again."

(not an exact case, but a pattern I've seen)