Surely a bit of perspective is the order of the day.
I'd agree that generally the overall reliability & build quality isn't what it was (but as an 'outsider', I wasn't convinced as far back as the Mk5). I'd also agree with people about the Mk7, very good in some aspects, but not anywhere close to the perception of what the quality should be for what it is perceived it should be for the absolute list price).
However, in real terms, along with progress, the price isn't that bad. The problem is a combination of price Vs wage inflation, the impact of PCP and the German manufacturers attitude to direct Vs indirect discounts.
Admittedly not a direct comparison on the face of it, but first one that popped into my head, a 1990 Merc 190E 2l, with better build quality, but no more space, far less power/performance & a desert worth of kit shortage (a radio as standard by that point, maybe?) was in today's money 40k with likely few discounts available.
Even allowing for differences, badge etc, that's a lot of money for some solidity (or extra warranty, repairs etc). I haven't checked, but I wonder how much a fully loaded Cosworth would be compared to a GTI or R. Or, better still, an UrQuattro compared to an R.