I think VW started to take a page from Japanese lean manufacturing and GM’s good but failed ideas of common platforms to create their own concept of containerization - MLB/MQB for their newer cars. There is still an element of cost cutting and over-engineering but I feel VW has made strides in product quality and F&F. The cars from the 1980s-1990s until the B8 Passat and A4 Jetta/Golf seemed GM-atrocious.
But seeing what
@The Critic had to do reseal an late CCTA 2.0FSI and what friends with Vanagons do to their vans as well as my experiences helping someone with an A3 Jetta VR6 I feel the DIY aspect comes in more as the cars age and having even the best VW/Audi indie shop(no shortage of those in the Bay Area) work on it is an expensive endeavor. I know a few people who work at a shop that specializes in VW buses/Vanagons, and a bill approaching $10k for major service or upgrades isn’t unheard of.