I guess the main issue I have with this point of view is that it relegates peoples with sub[par conventional military capability a realm in which they can only commit illegitimate actions of force. Since the US and its allies have such advanced capabilities (surveillance included), they can pinpoint one or two individuals and call it 'strategic' and non-intimidating to the masses. I understand that the use of the word 'terrorism' is ambiguous, as is finding out what exactly constitutes coercion or strategic objectives.
Also, if the bombing of the Marine barracks in Beirut worked strategically (the US moved out of Lebanon), then why are future like actions not deemed of strategic value with strategic objectives that can be met?
Radical Muslims view Western nations and Western cultures as threats to their way of life, just as many in the West view a nuclear Iran as a threat to our way of life. So, the Muslim terrorists do what they can to remove that threat and remove Western influence from their lives in the Middle East, and we all label it terrorism (which it is); yet, if the same thing happens in which the US does what it can to remove the threat to its way of life, it is not terrorism, even though this series of attacks has to cause terror in the lives of plenty of Iranian scientists and friends of scientists (there were two others in the car...collateral damage?).
Whatever you want to name it, what is happening in Iran appears to be state-sponsored illegitimate use of force against unarmed, non-enemy combatant, civilians.