I have Toyota Safety Sense 2.5 on a 2021 Camry:
Pre Collision system: pretty good, it did help once when a car suddenly pulled in front of me and rapidly slowed down. Pretty good at detecting pedestrians when backing up. A good safety net, but you should never rely on it.
Dynamic cruise control: pretty good, but you need to take control if traffic is totally stopped or a car suddenly pulls in our out in front of you.
Lane departure / lane tracing assist: almost useless - too many faded lanes and complicated patterns where I live.
Road sight assist: accurate but mostly useless
Blind spot detection: a good first pass, but you still need to look. It can miss motorcycles or bicycles on a slower road. As the article mentioned, it can also miss if something is about to go into your blind spot.
By far the most useful newer feature is the 360 view camera - it makes parking super easy.
My favorite feature. Of course you need to focus on the road, bit not having to check my speedometer and not having to constantly adjust it while doing long stretches of driving is nice.
I have seen a good implementation of blind spot monitoring, in a VW, where it was just a simple light on the appropriate side mirror. Unobtrusive, but obvious enough that you're unlikely to miss it.
The most recent car I drove (a Ford Mondeo, I think? It was a rental) had a number of those but I never really noticed them. The only time it beeped at me was when it thought I wasn't braking hard enough to avoid ramming the car in front (oh, and the proximity alert).
The reverse camera and related sensors were really useful because (a) I don't drive an awful lot, renting a car maybe once a year, and (b) because I only rent cars, I don't know them well enough to know if I'm gonna get through a gap or turn a tight corner, so having something that beeps at me to say I'm close to a wall is handy.
If I was driving the same car every day, some of these features would probably be a lot less relevant.
