I'm not familiar with that website (possibly someone else is?), but I wanted to comment your post in general.
I would recommend not paying attention to single "success stories" regarding treating high blood pressure. You are right - high blood pressure usually have a (or several) cause(s), and I think doctors could do a better job trying to identify the cause and treat it. Most hypertension is categorized as "primary" or "essential" hypertension (=without an obvious cause), while there often is one or more, but possibly not that obvious.
My advice is:
Identify (and if possible, correct) potential causes like: Stress, anxiety, overweight, smoking, alcohol, excess salt, sedetary lifestyle, lack of exercise, high carb/fat/unhealthy diet or stimulants. Let your doctor rule out causes like medication side effects, elevated thyroids, kidney diseases, hormonal diseases or narrowed arteries. If you still have an elevated blood pressure or are unable to correct obvious causes, consider medication.
I certainly agree with is_,,, Trying to find the silver bullet, so to speak, has been a search since Heck was a pup, and Dante's Inferno has a place in hell for those who propose nostrums for profit reasons. I'd suggest you follow conventional medications, they have certainly extended my life beyond my expectations. Frankly, to disregard a doctor's prescription to follow an internet threat to me is reckless behavior. You have a serious disease and it is time to face it.