It isn't a unique Texas Law. It's law everywhere in the US and Canada.

"mostly all in North America, require all surrounding vehicles to stop when a school bus is stopped with its red lights flashing."

https://en.wikipedia.org/wiki/School_bus_traffic_stop_laws

"And the human drivers who move to Texas often get tripped up by this law, because many aren't aware of the requirement."

Only if you are from a different country.

Which is beside the point that if anyone else drove through 20 bus stops, they couldn't use the excuse, "I'm from another country so I don't know your laws." to get out of jail.

That it's a software fix is also beside the point. "Oh I drove illegally 20 times. I know better and won't do it again."