Lane assist, as you mention, is one of those that I'm sure works perfectly on the manufacturer's track in testing. No construction, no exits, no problem! The first Hyundai I drove with lane keeping would "keep" me in my lane... right off the next exit on the freeway. I still think in places like Puerto Rico, with twisty, inconsistently maintained roads, that lane keeping is a hazard (there's a reason everyone drives straight down the middle until reaching an oncoming car). But the vehicles I've driven lately do a pretty good job even though they complain more than I'd like when entering or exiting a merge.
Just like physical buttons are making a comeback (not everywhere, have you seen the new all-screen Mercedes EV?) the safety features will settle down into a happy medium eventually.