this is just silliness.
its all about goals
the amount and duration of INTENSE cardio exer. hes using as his basis obviously comes from folks engaged in cardio sport (cycling, triathlon, running etc). dedication to those pursuits obviously isnt the ideal breeding ground for lbm gain, overall health, long life etc etc. not to say you wont derive benefits from trying to be the best runner you can be (stronger heart, bigger, more efficient cardio system) but they come with downsides (possible/eventual arthritis, weakened immune system during training, narrow focus of actual abilities).
he claims that 20+ yrs of intense training to reach a natl level left him debilitating conditions at the age of 28. ill let you do the math on that one but perhaps his training methods and ideologies were poor to begin with so simply changing them 180 degrees doesnt necc. make them right. if perhaps he did reach a natl level for competition then i do believe some of the breakdowns he is claiming can actually happen. we all dont get to go to the olympics just because we want too. 1000s are striving to reach that level and only a precious few have the luck, talent, fortitude/attitude and resilience (mental and physical) to make it. guess what happens to the rest?
if you want good overall health then lift some wgts, do some cardio, eat right etc etc.
if you want to win the local road race this weekend try that formula out and see how far it gets you.
ive competed in endurance running and cycling competitions in my younger days and yes i has arthritis in my knees and ankles. ive also had 2 collapsed lungs and some signifigant muscle imbalances (leg) from those pursuits. perhaps id be healthier if i aspired to be joe avg. and do a little of everything but not too much of anything but even knowing that i would change much.
personally thats no way to live or approach a sport you love but....... you have to have folks who are happy finishing 55th or 183rd or 477th otherwise there would be anything special about winning.