There's this weird thing where doctors and health articles all champion the benefits of oatmeal (and oat flour / oat protein), with benefits such as decreasing

There's this weird thing where doctors and health articles all champion the benefits of oatmeal (and oat flour / oat protein), with benefits such as decreasing indigestion and heartburn, while at the same time I see plenty of reports online (myself included) of people experiencing worsening indigestion symptoms after eating oat stuff. I had to stop drinking soylent for exactly that reason - crazy heartburn symptoms, only now starting to normalize after going back to eating what I normally eat. I suppose it might just be as simple as an oat allergy, but it's weird that the only negative symptom is indigestion.