I've been brought fully to the "viruses don't exist" / "germs are not pathogens" side
If you look at "pox" illnesses there's tremendous overlap in the symptoms of monkeypox, chickenpox, smallpox, cowpox, measles, shingles, etc
If you look at the cold & flu type illnesses there's tremendous overlap in their symptoms as well.
I think all of the above are actually 1-2 illnesses (depending on whether the poxes can be meaningfully differentiated from the colds).
There might be multiple groups trying to poison each other (and the rest of us). But, we are exposed to these "pathogens" all the time, so if they were capable of replicating in a healthy person to the point of causing illness and death, we would already be dead.