I've done 10K miles in the year since I got mine, no issues at all. No warning lights, nothing. It hasn't put a foot wrong.
Nobody posts, "I need some advice, I've just notched up another week of using my T6 without any issues".
Go on any of the other manufacturers owners forums, people post when they want advice, usually when they have a problem with their vehicle, that's the nature of forums, it doesn't mean their vehicles are inherently unreliable.
A friend of mine owns an independent garage, he has various brands of cars in with EGR / DPF related problems every day, these issues are not specific to VW.