Manifold Vacuum Advance what am I not getting?

Anything produced by a vehicle manufacturer is tested far beyond what aftermarket parts are, and most have years of heritage to rely on.

I'm not worried at all about electronics - it's the unnecessary change to reprogrammable digital systems that I don't follow. Hell, my washer/dryer has a cell phone interface on it. None of that stuff is needed and is nothing but just another failure point, whether it fails electronically, whether it uses buggy programming, or whether the user messes it up and declares it's junk.
Yeah and when the "unnecessary" stuff fails, it always affects the necessary. Every single time.