I have had my MG4 EV for approximately 4 weeks (2,000 miles and counting!) and my lane assist is most definitely trying to kill me!
Leaving it in emergency lane assist is asking for an accident, the car reacts so violently that you can quite easily end up in a different lane, or off the road entirely.
The lane keep assist is not much better, the sensitivity of the movement the car makes is not as violent, but it has been known to start to wander into a different lane.
In my meagre opinion MG need to recall and programme (or send an update) to tone down the sharpness of the emergency lane assist!!