The DQ200 is the one they did the big global recall on, the DQ250 seems to my untrained eye to be dependent on age and engine. There was a lot of noise about Diesels around 2008/9. So again what the op wants to know is when are the gearbox's safe / bad.
Me as i have said before I have 2014
Cupra, yes wiki says it can take 400nm but in reality its more like 550nm as that is what the stage three guys are pushing with no issues and they don't have a
problem on the DQ250 Box at all (and they do tell you if the setup is a
problem).
Number of hits on google means nothing without looking into the detail (eg is it VW, All cars, Skoda, Just the far east etc).
And then if you have had the recall the issue has been resolved (hopefully)
All I can tell you from my experience and the number of cars being sold with DSG across the VAG group, I do not think they are as bad as you think they are.
I would accept that you have to look after the gearbox (every three years oil change) but there is a lot of benefits to the gearbox.
At the end of the day this is a personal choice but I think the OP wants informed answers so he can work out the risk he faces.
I will close this thread from me buy saying I still think its the best auto box I have had and if you are into tuning your cars (and i am) the DSG is much better. All tuning requires you to look after the engine train if you want it to last.