I think including SpinRite in your answer makes it partly a vote about SpinRite.
At best, the way it is marketed rubs a lot of people the wrong way. (Including myself :-). Less charitably, when you read the old email that gets linked to, it has been marketed with false claims (just google the quoted tagline). SpinRite is making no effort to retract them or apologize; the 2018 website is still repeating the same ideas.
Many of us on this site want to evaluate software by how it works. The strength of SpinRite as an answer is not really based on that. It's based on your personal experience - which it sounds was potentially relevant to this case - and how well the money-back process works :-).
You can try to pre-empt this by recognising it, maybe acknowledging it, trying not to quote in a way that sounds like marketing-fluff, just describing whatever the technical conditions are that you need to run SpinRite.
I think trying to base this purely on votes doesn't work very well, because they are too capricious :-). Make an answer that you are satisfied with as being accurate. Or delete the answer, if you're not able to ignore the votes. Or... call people out on Meta and see if you get any better explanation :-).
I personally would avoid mentioning INT 13 i.e. the ancient BIOS API. The INT 13 functions are device-independent; they do not allow sending specific SATA commands, or specific commands to PATA drives for that matter, that could be expected to nurse this device back into yielding its precious data. If it was instead the implementations of one of these BIOS functions that knew the magic command - !!! - it would be old news by now. It would be one of the hdparm
options with the nice all-caps warning notices. Anyway, you don't need to make your answer a vote on whether that exact technical detail makes any sense.
There is one suggestion, in https://serverfault.com/a/272557/133475, that your flow of operations is not good. If your data is worth the much higher price of professional hard data recovery, then it could be a bad idea to run the drive for a long time, or at all, using SpinRite. Best to think about that part first. Of course a lot of people will not or cannot pay that much.