No, I don't think there is any truth in that. Here is a link to the Mayo Clinic information about gastroparesis. It discusses causes as well. I've never, ever heard that antacids/aluminum has ever been linked to the cause of gastroparesis.
Nissen Fundoplication 2/09
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”