Okay, I'll make this my last post since I'm actually meant to be trying IRL right now hence procrastinating on CW all arvo.
By "the entire world, outside of a few players, spontaneously forgot how to bowl despite all the advances and depth increases in world bowling for 30-40 years prior" I mean literally the population of professional bowlers.
It's actually really, really unlikely an entire global profession in a sporting context just goes bad overnight, especially when that sport is played outside. Are you really meaning to tell me that outside of Glenn McGrath and Shaun Pollock, every test nation just got bad at fast bowling, an art nations pour so much into building their depth in? That kids just got less talented overnight, that coaches woke up on January 1st 2000 and forgot how to coach?
No, it didn't happen. That's ridiculous. The number of potential ATG bowlers in the global pool stayed constant. It might even have increased as cricket world population rose and less advantaged countries improved their overall health. We didn't suddenly fire all the coaches either. Everything around the professional bowlers got harder very quickly, mainly the pitch homogensation towards CEO roads but you can definitely argue absolute batting skill advanced and I have time for that argument.
This is most easily seen in the statistics of the median test bowler. The Hoggard, the Kasprowicz, the Simon Doull and the Kemar Roach. These guys are the most vulnerable to changes around them because they're not as good.
The 2000s already had McGrath, Pollock, Shoiab, Bond, Gillespie, Ntini and Vaas in the "Great to very good in their era" bracket. If you start stamping averages of 27-28 on Hoggard, Harmison, Flintoff, Kasprowicz, Bichel, Nel, Tuffey, Zaheer and others instead of low 30s then the 2000s relative to history start looking alright, and if they had the same conditions as the 90s and today I think they would have those statistics and I think the sharp end of the very good bowlers like Gillespie and Vaas would also benefit, bringing their averages down to sneaky ATG levels.
The "Fast bowling got empirically worse in the 2000s" conventional wisdom is the biggest load of rubbish the sport has ever sold. If it was true it should have been the biggest general play emergency the game has ever seen, but it wasn't.
This is why Glenn McGrath is the GOAT - he beat what should have happened to him.
Anyway, Dale Steyn is a bit lucky he began his career as the environment he played in was getting kinder to fast bowlers. He is more a contemporary of Anderson, Broad, Harris, Johnson and the younger versions of the current Indian, Australian and NZ attacks than the guys above but he did make his name during the tail end of the CEO pitch era and missed out on the party currently going on in the return to 80s statistics era so he is very impressive.
I should really do some work so good chat. Hope your day was a bit more productive than mine.