Point of the operation
The resistance leader knew it all along. Carry out the operation and reprisals would be devastating. Entire villages razed, tens of thousands killed and thousands tortured. He did not see a point to the operation.
The American sniper Carlos Hathcock was said to have regretted an assassination mission because it caused many reprisal attacks.
It seems that high profile (or not high enough) assassinations might not be an effective strategy. Heydrich was not a critical strategist and killing him did not make the Germans less savage in their oppression of occupied lands.
So were the original goals of these operations misguided in overestimating the importance of the targets? If they thought the successor would be intimidated because his predecessor was assassinated, they were probably wrong. Or did the prospect of punching back trump all other considerations.
OTOH, assassinations are part of war, in the Vietnam case. For Czechoslovakia, partisans may have done more damage than good for their own people, as morbid as that sounds.