As mentioned, that was a real shame that those problems have tarnished your brief ownership of the Golf. Nearly 11 years back now we bought a brand new Polo GTI with the 1.4 Twin charge engine, for those in the know, some of these early cars had problematic engines with excessive oil consumption.
When pulling away I would notice clouds of blue smoke out the exhaust, and on checking the dipstick, there was nothing showing!
Cut a long story short, we persevered and eventually after 18 months, VW replaced the engine under warranty. It was not a great experience to get a new car and have that happen, but we still own it today and very happy with it.
But yes, I think any new major revision to a car (or whatever the product is), will show bugs or some kind of manufacturing defect, but I guess your MK8 car must have had worse issues than those detailed on the forum. Better luck with your next car though.