

Gas vehicles have the same if not more software than electric vehicles.
The amount of software you need is dependent on how many inputs and outputs the vehicle has.
Gas engines have way more inputs and outputs because they have way more moving parts and need to manage fuel ratios for thousands of revolutions per minute. Not to mention the inputs and outputs on a transmission, which electric vehicles don’t need.

Control modules became common in the 70s. The vehicles that don’t have computers at all have been off the road for decades