Regarding your recent meta (which was great), I'm curious why there is no mention of Yukio Mishima (and the historical coup that he inspired), given that the original Destro seems to be a reference of sorts to him (at least as listed in the MHA wiki trivia section, which honestly lines up with irl events in terms of inspiration). Thoughts? Great work again!
Thanks for the ask, and I'm glad you enjoyed the essay.
As to your question, well, the simple truth is that I didn't know about Mishima Yukio in advance, nor did he turn up in the course of my research. Therefore, he never even had a chance to be included. Having done some reading on him, now, though, I doubt I would have wound up talking about the possible connection even if I had known, for a few reasons:
The essay wasn't concerned with the ideology of the people being taken in by the mass arrest; it was concerned with the logistics and ethics of the operation carrying out that mass arrest. Since the manga didn't see fit to include any context on how the activities of the historical MLA influenced the approach the HPSC took in planning the raid, Destro and his actions--and thus any historical events they might or might not be referencing--just weren't relevant to my topic.
Even if I had been looking for a reason to talk about the activities of the original MLA, I probably wouldn't have gone to the Mishima Incident to do it. One was a years-long campaign of violence and resistance against the government that capitalized on the sentiment of a broad swathe of public opinion and which ended only with the defeat and capture of the leader of the movement. The other was less a genuine coup attempt than a hostage situation of five men trying to make a rhetorical point to an unfriendly crowd before two of them committed suicide and the remaining three peacefully submitted to arrest. Even just on the face of it, their scales don't begin to compare.
Whether Yotsubashi Chikara is a reference to Mishima Yukio is an entirely different question--one that would involve a lot of delving into their histories, stories, goals, ideologies, methods, motivations, and certainly their deaths. I have some thoughts on it, but frankly, they would involve a lot more talking about the realities of right-wing Japanese nationalism as an ideology and Mishima's relationship to it than I'm entirely comfortable getting into in this context. Anyway, it's not even really the question you asked, so let me just boil it down to this:
There are some very broad-strokes similarities between the two, as the wiki notes, so I could see Mishima being an inspiration for Destro. The devil's in the details, though, and I think even with what little we know or can infer about Destro, the details differ significantly enough that I'd be very hesitant to call him an outright reference to Mishima.
If you're interested in more, though, Wikipedia has got a very lengthy article on Mishima that's worth a perusal, rather than just taking my or the BNHA wiki's word for it. Thanks again for the ask.