Small Tummy/Low Hydrochloric Acid Levels?

I found this statement in an article I was reading and wondered if it affects those with smaller tummies who take antacids?

"Muscle cramping, and the accompanying tingling sensations, can be an indicator of lack of nutrients or poor nutrient assimilation. Low levels of circulating blood Calcium can cause cramping. Calcium, Protein and Iron are three of the most difficult essentials for the body to absorb. Low stomach acid levels, hydrochloric acid, can pose problems where calcium, iron and protein assimilation is concerned. Taking antacids can be a major contributor to low hydrochloric acid levels.

Taking digestive enzymes, as directed on the label, may help digestion and acid indigestion. A large percentage of the problems thought to be caused by excess stomach acid are actually problems from hydrochloric acid levels that are too low. If there is too little hydrochloric acid, the food isn't digested in the stomach properly and begins to putrefy causing bloating, burping and indigestion. If you have problems with low acid levels, you should eat protein, high calcium and iron rich foods first."