It's not necessary that you agree. Everyone is free to their own opinions on what they feel is best and if you are making the progress you like, by all means continue until it doesn't work for you anymore.
That said, the best in the world at making people bigger, stronger, faster, and more explosive design programs as I've layed out. We are talking Div1, Pro, and Olympic level coaches for power, strength, and speed all around the world - this is fact, not opinion. Granted for skill specific sports 3x weekly squatting or 4x in the case of the Smolov is generally offseason but many Olympic Lifters perform 3 dedicated squat sessions per week in addition to many sessions of full body pulling, a good portion of which involves recovery from the full squat position. Olympic Lifting is about as far from an endurance activity as one can get and well past the BBing spectrum.
As for looking to top BBers for training protocol, that's just a massive mistake. As a rule, these guys know nothing more about training than many of the random people on this board. If asked to explain "dual factor theory" most of them wouldn't have a clue and this is training 101 (keep in mind, I'm not asking them to agree with dual factor theory - even though it is absolutely dominant and for the most part universally accepted at elite levels - I'm only asking if they know what it is). Ask them to name a good training book or any serious researcher in the field - you'll get a blank stare. They have good genetics, a solid grasp of diet, can perform some basic exercises, and have a lot of discipline in getting themselves into contest condition but for the most part their results from training are totally driven by drugs and increased dosages. If you take enough drugs even a shitty training stimulus can still elicit gains providing you eat enough (think farmers juicing cattle - they gain a lot of muscle without touching a weight). The overwhelming majority of the programs they use are no better than what one finds in a basic commercial gym. Better to look at what works for natural athletes or athletes who are drug tested and can't rely exclusively on drugs for gains. Take the programs that are effective there and then use them in a heavy steroid environment - provides better gains at the same dosage or equal gains at less dosage.
There's a lot of information I've linked in the thread below. Read the 'Dual Factor Theory' links. Read the 'Why Haven't Most BBers Heard...." links if you want a longer more detailed version of the above. Read the link to Glenn Pendlay's interview and whatever else might interest you including the Good Sources of Knowledge and Books link. It's good information and you'll learn a lot about how real training is done outside of voodoo BBing bullshit. It will at least expand your knowledge and you might put on muscle a lot faster too so there's really nothing to lose. Everyone on this board who has run the 5x5 program and squatted 3x per week has been very happy thusfar. Several have gained around 20lbs in 9 weeks all natural and had their lifts go through the roof. All defying conventional BBing and accepting the way the rest of the world trains. Like I said, you have nothing to lose in looking and seeing how people who are world renowned for getting results train their athletes.
http://www.elitefitness.com/forum/showthread.php?t=375215