Safer settings are exposed with decent labels, but you can also use the advanced mode which is much more low-level, akin to what you described.

Thanks, i learned something new. I think we're both right by degree. That app is more functional than anything I've found, but there comes a point where you need someone to tell you the modules and fields or you risk bricking your car.

Oh for sure, but you can do a lot of things without ever touching the advanced coding section. It's definitely worth being cautious though - as you say you can definitely brick your car with it if you're just YOLOing your way through it. It does back up the module configuration prior to writing the update though so you do have a safety net.