Actually I did just that and guess what, he is right about the quicker recovery part - it still works at age 50. I have done both high mileage (running about 10 times per week) and low mileage (running 4 times per week) and they both worked.
After years of avoiding the long runs (I just hated running long and slow)...I finally learned how to do long runs. I had done a few 20 milers as a youngster but those were faster (low 6:00 pace - training for a marathon). At first the goal was just to get up to 20 miles at 8:00+ pace. It took a little while, but eventually the body adapts. Once I was able to do a 20 miler, I tried to do two in a row and then 3. I was surprised that my old body would recovery well enough to be able to do this, but it did. Then maybe 6 months later I had a stretch of runs over 9 days where I ran 20 miles each day. These were not the slow over 8:00 pace, but a little more up tempo (probably 6:40+/-). On the last day I went 26 miles. So that was the most ever in 7 days at 146 miles. This was in December.
The following summer I built back up to 140, then 150, then 160, then 200. Progression was something like: 116, 112, 120, 130, 140, 140, 150, 160, 165, 200, etc. Over 20 weeks I average 139 miles a week. and yes, you do recovery faster when your body gets used to high mileage. I turned 50 that summer. In one of those weeks I did a 30 mile run and recovered well enough to do another 30 mile run the next day. and again, these were not slow runs...i would call them up tempo around 7:20 pace.
ultimately the only way to know if a training style will work is to try it. So many runners seems to just want to copy what someone else has done. That is probably not the best way to find out what works. Each body is different. If your are going to go with low mileage, then obviously you need to be running it at a higher intensity to make gains. If you are going for higher volume, you need most of it to be at a lower intensity (but it can get fasters as you adapt - and you still need some faster paced running to really maximize your training).
I did one summer of just big miles and slow running with no speed = and guess what? that did not work! I jumped up to 210 in one week without gradually building into it - progression went something like this: 140, 170, 210 where i was running 3 times per day - with no rest days...and it got slower and slower 9:00 pace stuff and when i tried to run fast (like 6:00 pace) I couldn't. It took several weeks to slowly build back the faster paced running. Eventually it did come back, but just all slow with no go = did not work for me.
I agree with Aguia77. Running on tired legs is part of the process. and over time those tired legs become strong legs and strong lungs.