One has to think holistically here. The foundation of good health comes about through a connected balance based on both nutrition at all levels (spiritual, mental, emotional, and physical) as well as lack of toxicity at the same levels (what some term as blockages).
Alkalinity is nothing more than a signpost of correct balance that is connected to many things such as oxygenation, good flow, mineralization, emotional balance, etc
In my opinion, flow is the most important aspect of health. It is the difference between a stagnant pond vs a flowing stream. Many doctors (beyond the mainstream medical for profit industry)termed the concept of poor (physical) flow as autointoxication.
Of course this knowledge won't resonate with anyone supporting pharma stocks nor their PR disinfo agents ;-)