Based on the self driving trials in my Model Y, I find it terrifying that anyone trusts it to drive them around. It required multiple interventions in a single 10-minute drive last time I tried it.
No, you do not "become scary good" every single week the past 10 years and yet still not be able to drive coast to coast all by itself (which Elon promised it would do a decade ago)
You are just human and bad at evaluating it. You might even be experiencing literal statistical noise.