With all respect but can't agree with that. Depending on FC/station orbits, which we can't control, a short boost with good timing can save quite a time for multiple runs. Not the greatest miner though, probably as you said the SCO doesn't make a big difference there.
You see, what the whole idea of the SCO FSD is? To make the game more appealing by solving one of the oldest issues - long supercruise travel, and the solution we have is good indeed. But players don't have to deal with any side effects, especially old players with thousands of hours shouldn't bother with replacement dozens of their FSDs. FDevs have to do that.