1) talk to me when you get past 250k miles. High load is good/great to a point. WOT in controlled conditions, OK. Time at temperature, maybe so, maybe not. Transients? I'd rather not... Especially when it combines a number of harsher conditions all combined into one in these types of examples.
2) Why do you thinkmost folks buy these things, especially the louder/more obnoxious ones? A hyundai "luxury" V8 car?!? really?!? High power, performance, luxury, etc autos have their place and are often awesome cars. But there is, for most of the public who finances their car, cant pay their mortgage/credit cards, and has no retirement savings, a better way to spend money, IMO.
3) Agreed, but there is no replacement for being behind the wheel. Driving dynamics is a huge part of being a good/great vehicle. The videos ARE neat, but Im thinking a little bigger picture here, IMO at least.
4) Your dollar bills. Not my place to tell you that you could be doing something better with them, but never complain if you can't afford something else down the line... Just saying.