To the OP
A more generalised explanation.
Many ME machines can be operated “performance class 1” The definition of this is that suffering a SE failure: a crash can be avoided. Either by landing, or flying away.
To ensure this performance: weights/profiles/techniques described in the RFM must be followed exactly.
It’s largely up to the operator/operation as to whether the machine is operated to these standards. As mentioned the weight might have to be reduced. Often significantly. Potentially some machines couldn’t operate PC1 from some locations at any weight.
An analogy with your assumed SE experience. HV curves. From a clear area, you could follow the graphs in your RFM, and be capable of an auto rotational landing from any position in your departure. From a confined area, your only option might be a vertical departure that puts you in the HV “avoid” area. An engine failure in the avoid area will likely result in a crash (safe landing not demonstrated during certification testing). A risk most SE pilots accept, but minimise. The risks are often dictated by the local rules dependent on operation.
Hope this helps