Evil/Bad/Nazi Captain America isn't new, waaaaay back in those Tales of Suspense books, during WW2, the Red Skull brainwashed Cap to assassinate a high-level American General. Skull even introduced Cap to Hitler.
Back in the early 80s, Cap was brainwashed by Faustus and ran around with a Swastika painted on his shield, and again when Dan Jurgens took over Cap books in/around the late 90s.
Even in Invaders books, the Red Skull brainwashed Cap (Along with Namor, Torch and Toro) to fight for a fascist regime.
So Captain America brainwashed again, and by a cosmic being who also rewrote Cap's history, but the difference now, we're putting a Social relevance spin to it. We got to see what Hydra Cap would have done to America and how Cap affected the superhero population.
I love your opinions and thoughts. Keep it up. We all should discuss what's going on in our place and world. And keep reading comics.
This time is different.
All of those examples you gave were examples of brainwashing - of Captain America not being in control - control he would later regain. Also, no one was ever really hurt by Cap in any of those stories.
By Nick Spencers own admission, the Captain were seeing in Secret Empire isnt going to willpower his way out of this, because the Cap we know ceased to exist - and that Captain America has done all manner of HORRIBLE things including bombing a city of 500,000 people, starving large parts of the US, building concentration camps, sanctioning public executions, and agreeing to vivisection.