That's what I mean though: these features are not really ideal for traffic that isn't flowing smoothly. Rush hour with a lane closed is a scenario where the driver should be fully aware & in control. Behavior is often unpredictable in such cases with tightly spaced cars and frustrated drivers.

I've been in such traffic and the only issue is TACC's 1-2 car spacing allows more people in to my lane than I usually allow, but otherwise it does fine. Tesla's TACC (compared to Honda) is even better in this sense since it often accelerates at the same time as the car in front of it, while Honda's will wait for a 1 car gap to continue driving on its own.

Many manufacturers now offer those features to a stop, or even stop and go situations