Batman as a fascist is about as unique a concept as Superman turning evil. It's a fairly mundane view of the character, though something of a logical conclusion if Batman didn't have people yanking on his chain to keep him in line.
The observation that Batman is an insanely rich man with mental health issues punching the destitute and putting them in comas is not a new one.
Nor is it really a correct view of who Batman is.
While true that the idea is mundane by 2017 standards, it depends on the portrayal of Batman as to where Batman falls on the spectrum and whether or not there is sufficient subtext to come to that conclusion.
Batman of the Animated Series? Sure, I totally believe he wants to help the people he subdues and truly believes that people can come back from the brink. Entire episodes are spent on Batman trying to help these people and giving them chance after chance without resorting to any more violence than absolutely necessary and sending them to *gasp* actual mental health facilities. You can argue whether or not his tactics are ethical or not and whether they help or not, but you can't really argue that he doesn't try to help these people in his own way.
Batman of the Arkham game series?
Arkham Asylum literally has Batman going into an asylum, which if Gotham had any standards should have been shut down long ago for being destitute based off the mold and scum and general filth of the place, and beating the shit out of anyone who rises against him. Mentally invalid patients, the criminally insane, etc. It's no fucking wonder none of these people get better. And hey, if they had done that as a commentary on the current state of mental health and prison reformation, that'd be awesome. But somehow I doubt that since all of them are shown to be violent psychopaths rather than frightened mentally ill patients who can't help themselves. Because beating up sympathetic mentally ill patients would probably take away from the fun of the game, and we can't have that. Nor could we make a Batman game not about Batman beating the ever living crap out of everyone.
Arkham City has inmates talking about how Batman broke "a dozen of my bones" subduing them. Great way to reform criminals! And because the creators probably figured out that people would be uncomfortable with beating up sympathetic criminals, all of them are irredeemable scum based off the scanner conversations.
Arkham Knight?