I think its pretty simple (I'll use myself as an example).
I can spend $10k on an older diesel pickup that is in good shape with no issues. Tows 12.5k lbs, gets good mpg. Will require odds and ends (fluid changes, tires, wheel bearings, u-joints, front suspension/steering component overhaul) over the course of owning it for the next decade. Lets say an additional $8k (with me doing the work) in the next decade. Total is $18k.
Or, I spend $30k on a newer gas pickup that can tow 11k lbs, gets better mpg, and has all the modern luxuries. I also only have to do tires, brakes, fluids and a couple other small maintenance items for the next 100,000 miles (at least). If I maintain it well and don't beat on it, I might never have to do more than what I already listed. the $30k is at 0% financing (yea yea, alright, the "financing" is included in the price, whatever). The longer I stretch the loan out for, the longer the dollar suffers inflation (lets call average year over year inflation for a decade 2% for E36 M3s and giggles).
So the $30k vehicle I bought now, didn't really cost $30k, it cost less relative to inflation. I don't know how long it takes you guys to save $30k of after tax dollars, but for most folks earning $100k or less per year, it takes a couple years. Tires, brakes, and fluids are pretty cheap, and all stuff I can do myself. I get a vehicle that never breaks down (or at least, I'm not out of pocket if it does). Maybe budget $3k over a decade of maintenance. Let's call it an even $30k due to inflation in relative current dollars.
So $18k fairly quickly, or $30k over 7 years? I know which one I'd take in a heartbeat, and probably will end up with an asset with higher value in the end. At some point, there is a valid argument to be made on using credit to get something that can be viewed as a need (reliable transportation, just like internet, is a need in the 21st century. As that TTAC article mentioned, saying otherwise probably does point to an individual being way above the 90% of the rest of us nose-pickers, you are also probably a person who goes "I don't need a cellphone, I'm thinking of getting rid of it").