Yes, I guess that you could say that Miracle-Mineral-Supplement makes your body temporarily more acidic. All that crap that it oxidizes is acidic, and the mycotoxins released when the pathogens burst are acidic. That's why it is so important to drink, drink, drink ... as you are doing.
In the longer-term view, whatever causes those acidic organisms to multiply could be termed acidifying, and whatever causes them to diminish could be said to be alkalizing. So, in this holistic sense, Miracle-Mineral-Supplement is alkalizing ... over the long run it reduces acids in the body.