Having played Starcraft myself back in the day, I dont really see inhuman APM necessary, I was beating people with several times my APM because all they do is spam the ground with units for "better control" or click the map, buildings several times just to keep the APM high, but they don't actually do anything for the most part, keep your actions relevant, not numerous.
Last Starcraft grand finals or semi finals or whatever that went on yesterday, proves my point, where Hydra with 200-300 APM, completely crushed Masu, who possibly has the highest ever APM recorded of 700(WHUT?)
Starcraft is very much a "Strategy" game, tactics is something you execute, which are part of a strategy you have planned out ahead of time, the strategy may change depending on what needs doing, with different tactics to achieve said strategic goal.
As for Starsector, I give like.. 1 or 2 commands per battle, the fights are usualy over in minutes, mostly achieved from the POV of my flagship, very little thought goes behind any of my actions.
And as such, Starsector is an Open world Top down space shooter with some extra flavours, not an RTS, as mentioned above.