I'm also an old person who yells, and I agree.
Mostly, though, if we're going to 'modernize' the system (with or without AI), it needs to be done smartly and methodically, and by people who aren't philosophically opposed to Social Security's existence.
I don't know about the hardware, but I think the software is substantially older than that — dates back to the 1960s. I might be wrong, though, and I'm too stoned right now to Google it.