Fwiw, acupuncture, chiropractic and homeopathy have always been targeted and ridiculed by the AMA. As well as ayurvedic and shamanic healing. For the most part I would call those uncontrolled opposition, and generally forces for good.

Controlled opposition include folks like Dr. Oz and Dr. Andrew Weill, who reel people in with a few truths but leave them in the allopathic system. The Rockefeller system goal is to capture them entirely as much as possible, like osteopathy, which was a different healing philosophy that has now been fully coopted. In addition to external coercion of those schools of thought (i.e., participating in insurance reimbursement), I believe there are covert infiltrators who intentionally misrepresent those schools of thought.

Infection can also include bacteria and parasites, living creatures that multiply. Terrain theory is not inherently incompatible with viruses, if they existed, but for the most part those that espouse terrain theory have different explanations for the material that allopathic medicine calls a virus. I now believe virology is a fake science, but I also think it's largely a side debate to distract from the fact that real cures exist outside of prescription drugs and symptom treatment.

I don't especially like the term terrain theory, simply because most proponents of the term sound wacko, despite the literal meaning being straightforward. But many other schools of thought relating to healing arts, including homeopathy, are based on concepts that are in line with terrain theory generally, and most of them existed as schools of thought long before the concept of viruses. So the existence or nonexistence of viruses is almost academic, except that allopathic medicine requires viruses to be real for much (though not all) of its treatments.

I'm still learning, too.