Re: H Pylori
I would say the answer to your first 2 questions is "yes," though I would replace "root cause factor" with "contributing factor." The post above this one describes the mechanics pretty well. H pylori secretes "urease, which converts urea to ammonia." pH of the stomach rises. Breakdown of meats is hampered. Undigested meat/protein travels down the GI. Leads to microbe overgrowth, putrefication, inflammation.
Regarding the baking soda approach, what scenario do you have in mind?--you drink the baking soda in water and all the little H pylori adhered to the stomach walls (some of which form biofilms, btw) say, "Look, alkaline water! Let's go swimming!.. Look, Honey, the backstroke!" And then they all get washed down small intestine.(?) It would be less laughable if H pylori fed on sodium bicarbonate, but I doubt you'll find any sources that say that. Search results say the following:
"H. pylori feeds on inflammatory exudates due to epithelial injury."
"H. pylori feeds on nutrients sent to reinforce the white cells."
From a book by Sue Meiner: "The immune system keeps on sending defense agents, which, when they die, release superoxide radicals on the stomach lining cells. H pylori feeds on this..."
I'm guessing baking soda would just make things nice and cozy for the H pylori, and probably lead to a population boom. 4 days ago you asked one of the more knowledgeable people on CZ his take on the baking soda remedy and he gave it thumbs down. I guess you're really trolling for a "Yes." ;-)