Well, that was quite a blast of assertions that mostly sound to me like some kind of logic game.
They're true statements and logical. The argument is sound.
A plant-based diet just does increase alkalinity in the body,
Funny how you call it a game and then immediately write an unsupported assertion yourself. Not to mention that your assertion is false.
The pH of skin is around 5. Your skin is acidic. If it became alkaline then you would have a serious problem.
Or you could say it decreases acidity.
If you owe someone $100 and you pay them back $10 of it - it'd be silly to say that you had ten more dollars. You're still $90 in the hole - you don't have any money.
Decreasing the acidity of a solution some while still having it be acidic is not really an increase in alkalinity in the sense of you actually having the alkalinity. It's neutralized and the solution is still acidic.