you’re completely wrong
I don’t know a lot of things. But I do know chemistry. HCl and betaine HCl are different substances with different properties.
Betaine HCl can increase hydrochloric acid in the stomach (supposedly a good thing). HCl is hydrochloric acid in the first place.
For example, betaine HCl will not affect the esophagus. Depending on the concentration, taking HCl can damage the esophagus. And perhaps severely.
I fully understand that no one - including the author of this article - is advocating taking HCl. I am saying that the writing is sloppy.