You mentioned hatch blocking. Yes you move your probe and block it from building yes its very simple. But thats like saying "wheres the strategy in Inferno Divider!?". You're right, what strategy? Its a strategy that falls under the line of "trick". You anticipate it and then deny it, and cantrip if you will.
And as for APM? That all falls under execution, and you know without proper execution in any game you will fail. Sure SC requires an intense amount of it, but it doesn't mean its strategy is any less, because face it, if both people have a legitimate strategy (and in this RTS of 12 years you know theres a lot of it), and one basically outplays the other because they can control better, can you say its the fault of the game? If you answered yes, I would refer you to chess.
You also broke down SC into "basic" strategies, yes... you basically reworded the rock, paper, scissors template that applies to every game. In blazblue, pure offense will lose to traps, traps will lose to pure defense, and pure defense will lose to pure offensive. Theres your basic strategy.
We could spend a lot of time and break down what traps are. And we could break down what the early expo demands in terms of strategy. An over simplification.
In my opinion, there is nothing wrong in routing your forces so they don't die. It takes a lot more than holding back+ A&B in BB, but thats just the nature of the game and I don't think thats a bad thing. All twitch? Maybe, but you can't sit there and tell me IB -> GETB isn't twitch, and that it won't save you a game, and I'm not gonna sit here and even pretend to say that starcraft isn't twitch orientated because you're right on all accounts that the requirement for execution in SC is very high.
Also look at it from a metaphysical standpoint. If starcraft really was all just execution and no strategy, it would have died a long time ago because it would be labeled as a poor game equivalent to whack a mole. But no, its varied structure that doesn't pidgeon hole it into 4 bnb setups is what allowed it to be strategy, and just because the strategy requires levels of execution doesn't knock it off as bad.
Think of the M&M build like a combo in BB, you set it up and you execute it. If the person reads you right then they can set up to counter it. If they don't read it or fail to build appropriate counters, well they lose if they don't do execution just perfect because of soft counters(we're assuming equal skill levels). If they build the appropriate counter, they still have to execute it right to stop it because it isn't just "hurr durr I send units".
Yeah, no. Strategy is the fundamental thought and reasoning behinds games. Having a tough level of execution doesn't dumb down strategy or completely override it (I don't know if this was your point, that the execution shoves away stratagem, but thats what I got out of your post). When you have more buildable units, techs, and buildings in an rts than you do moves in a fighter, can you claim that it requires less strategy? When you say that it requires more twitch/execution because of that fact, does it make it a bad game, or a more challenging one, or simply a game where execution comes with the territory?
Your videos of the marines attacking that lurker isn't anything special or new. Speaking of "Nu", dodging a projectile attack with close timing and proper manuvering and then counter attacking within a certain time frame? Sounds... familiar. (P.S. theres no reason why there would ever be just one marine attacking one lurker, or just having lurkers unsupported within a reasonable time frame(unless the support is already dead))
The way I see it is if we assign arbitrary values to strategy and execution (impossible but just for sake of comparison), BB might be Strategy: 10, Execution: 14 and Starcraft would be Strategy: 12, Execution: 26 or something. I mean we choose games because we love them, not because they're better than other games on an arbitrary level. And I love fighters, BB got me hooked, and I really don't care for starcraft. But I really try not to bias it because no matter how you stack it, the quality of a game thats been elevated to national past time must be pretty good on all accounts of intellectual and physical prowess.
Edit: and this whole time just to establish the fact that starcraft does indeed require more execution than fighters to be good.