1st is this good for the car?
2nd if its a viable fix how come the car never came like this from factory?
....Broadly speaking, the oem method is a way to satisfy regulations which the car manufacturer (VW/VAG) is subjected to regarding emissions.
To me it seems like a clear case of screw the potential harm to the longevity of the engine components, a minutely tiny reduction of emissions will help our rating and sell more cars etc etc.
AFAIK, if you fit a race catch can which vents to the atmosphere, your car will fail MOT.