“ The researchers attributed most of the gap to overestimates of the “utility factor” – the ratio of miles travelled in electric mode to the total miles travelled – finding that 27% of driving was done in electric mode even though official estimates assumed 84%. ”
Perhaps the rav4 prime @ 41ml max ev range is a better system than all the other low range PHEVs like it, and has better real world usage data than them. I doubt it though, but I don’t have the data on just the rav.
BUT, at least very occasionally I have seen people get promoted for simplicity, I've even successfully made the case myself. With a problem that was itself so complex that it was causing fires on a regular basis, and staff & principal engineers didn't want to touch it with a ten foot pole. When a senior eng spent a couple of weeks thinking about the problem and eventually figured out a way to reframe it and simplify the solution, melting away months of work, making the promo case was actually quite easy.
The problem is, the opportunities to burn down complexity like that don't present themselves nearly as often as the opportunities to overcomplicate a thing, which are pretty much unbounded.