I do not know if anyone mentioned this in this thread, but one of my more autistic friends had a gripe about the whole "they're all brain scans, you're all just copies" ending from an interesting angle.
The computer systems from C&A seem to be from the 90's to late 80's. Presumably these systems are also fairly closed from the outside world to prevent Caine from going Skynet on people (since he had to be fed all the information, likely manually too) or to prevent rival corporations from stealing C&A technology as easily if Scratch and Kinger took their work halfway seriously. Not to mention a computer from the early 90's shouldn't be able to access or load an aughts webpage.
So how the fuck does Caine, an AI who barely comprehends Humanity, an AI who likely is stuck on a closed system, and an AI that's been plugged into a computer that's at best 15 years out of date get the ability to surf and browse the internet? Again, this seems like this wasn't an ability for Carine to have before because it seems like he had to be manually fed information and concepts. And if technological progression is like our own world which it appears to be- he physically shouldn't have this ability, or at the most Caine should only have access to Web 1.0 sites- which would be defunct or sporadic.
I'm sure a more technically minded autist than my friend could poke some holes in what he said, but I find it a fascinating angle to come at the finale from.