Hard to say. I expect its more likely that you're right than wrong, but that's not to say it's definitely that way.
So I'm not 100% certain this is how it would act, but them having a separate chip for screenshots - like, what does that mean? So I see two possibilities: a hardware subsystem Frankensteined onto an existing phone; or a separate SOC that exists within the phone's frame for monitoring.
For the Frankenstein's version, it'd probably basically be a timer, minor image processing (to read the screen), and a small memory store (to keep data from screen caps). It'd probably route instructions through the phones CPU. I don't know thats flashing your OS would prevent this from operating, but that's where I'd start in trying to bypass it.
For the separate SOC, yeah you're fucked. Maybe you can bust open the frame and remove it....lol, but good luck without the internet handy.
See, my knee jerk reaction is to say this is an attempt to impose The King's English on people.
That is to say that there is one and only one correct manner of speech and deviations - or dare I suggest the existence of barbarous "slang" - are not to be tolerated.
Yes, you should care about the communication and about making it high quality, but the goal is clarity of message; not some strict adherence to a mostly arbitrary rule book.
I like the word "alot" and I tend to use it alot. I think you would be hard pressed to find someone who was confused by my meaning I say it/write it.
As for "Thena gin".....yeah, not an honest example....