DCC does work on rubbish road surfaces and is better than just having hard or soft suspension
Your "comfort", "normal" or "sport" settings are just initial damping. On comfort it will ride like a big car over bumps, potholes and speedhumps, but chuck it into a bend and the sensors will detect the loading and stiffen it so you don't get body roll like a 2CV.
Its called Dynamic Chassis Control for good reason - its not the older electronic suspension setting selector.
Its very clever, its very good.
Like much modern tech, some people don't trust the witchcraft, others accept it as a miracle.
It has never been really understood that the DCC evolved into something very good and most who criticise it do so from having the previous versions or from never experiencing it at all.
The DCC is functioning at all times and in all modes and the difference is noticeable between each one.
Have done a lot of miles in colleagues vanilla GTI over last 2 years and when he was in my GTD and now my R he in reverse openly admits the ride is great.
The standard ride on the MK 7 are decent so not going to contest its a must have as ride would be atrocious otherwise but on some of the poor winter roads you find the DCC takes all the pain out of them.
Now I am not sure the tech has advanced more, imagine it has, but had 18" on the GTD and now 19" Pretoria on the R and would say the comfort is even softer on the R (maybe due to lighter wheels?) which surprised me as thought with larger wheels and 5 cm drop the ride would have been tad harsher.
When place in race the ride noticeably hardens up with the steering.
Its great tech, gives you the comfortable family run around (regularly have passengers) and the fast sure handling car that lies at its heart with a push of a button.