But were those new riders in training who never rode before? OP's got 4000 km's under their belt, so I'm giving the benefit of the doubt - by then they shouldn't be doing stuff like hammering the brakes mid-corner. And even if they did, isn't that the point of these aids? I'll give you steering input, but from the tests I've read about in the past, you should be able to hammer the brakes and/or throttle and ABS/traction control should be able to prevent lockup. No guarantee you'll slow down in time to make the turn if you overcooked it, but that's going back to the laws of physics). What other reason is there for a six-axis IMU that measures roll, pitch, yaw, surge, heave, and sway?
Again, we know nothing about the OP. Mileage is not an indicator of experience and/or skill.
I know riders who put on 30,000 kms every season.
But most of that is commuting back and forth to work on the same stretch of road every single day.
They basically do the same 1 km, 30,000 times a year, and their skills are far inferior to someone who rides track/trails and only does 5K a year on the weekends.