Excellent stuff!
Green ink brigade? Whatever that means - not a bit of it! This guy is making a point and I get it!
One thing he left out (perhaps he ran out of steam) but I'll happily
(well not really) throw it in the pot: compatibility. Make sure bike bits from one manufacturer will
never fit bits from another ... fit your bike with Campag - you're locked into Campag for the rest of your life!
But not all things about bikes have rocketed in price, over the years. Some components are actually cheaper, in real terms, than they were 30 years ago. I remember scraping to buy my first cotterless (taper) chainset in the '70s, about £13 it cost me (at least I got the B/B thrown in). That would be about £100 in today's money: nowadays you can get reasonable low-cost chainsets for £30 and up, and BB's for another £10 maybe. Complete bikes? Well I bought my hand-built 531 road/tourer for just over £100, that would be £800-900 after inflation. About the same as a reasonable entry-level road bike or tourer now.
But of course, there were no helmets to buy in those days - or shades - or lycra - or SPD/shoes (you could get shoe plates - and a hair net if you were a racer - that was about it).