A few things....
VO2max doesn't matter...I thought we already covered that here? You could improve your performance by leaps and bounds without your VO2max moving an inch. Other factors also affect your running such as RE and LT. Strength training/plyos Improve RE.
There are always problems with research studies. They are too short, not enough subjects, the protocol is wack, or the subjects aren't specific to our needs (competitive runners). They are flawed but they still provide important data points.
Yes you need to maximize your runnIng by runnIng but if you value your running long term then you should do some sort of strength training for injury prevention. Still you should NOT replace your training with strength training, you should augment. 30 minutes 1-2 x a week is not asking a lot.
Also, Salazar's guys do resistence training (even with barbells! Oh the horror), Geb hit gym, Morceli hit the gym, Steve Spence (1991 world champs marathon bronze).
So you have all of these data points, the research and high-level runners, telling you strength training is beneficial. The bIggest Issue seems to be the how? Old school machIne cIrcuIts? Cool and sexy functIonal/specIfIc traInIng? Just plyos? It makes lIttle sense to put the roof on the house wIthout a strong foundatIon. Heavy strength traInIng provIdes the foundatIon for the cool functIonal stuff.
At least do something. Even if its nothing more than bodyweight exercises/plyos. Something is better than nothing.
Alan