How credible are "tainted supplements/food" arguments?

I am attempting to play devil's advocate here. In reality, I think these arguments are an attempt to create an air of mystery where there is none. "My team are going to look into this, etc." I eat a pretty clean, plant based diet but I am not a trained "nutritionist". If I submitted for a month of VADA testing but otherwise changed nothing about my diet, what are the chances I would test positive for one of these exotic substances boxers are regularly popping for? Tren was used for cattle. Not sure if it is anymore. But nobody uses clenbuterol on cows, it would shrink their weight, and more weight is more money. Nobody is putting sarms in meat either, they use real steroids if anything, but probably not what most boxers would use.

This is what I mean. Do you, for example, ever think you've managed to accidentally consume exogenous testosterone? It just seems it's always happening to the guys who would benefit from the stuff. Seems highly implausible. The only instance where the claim would be credible would be if the supplements were tainted at the source somehow and everyone who bought that particular supplement was exposed to the same contaminants. Exceedingly unlikely.

Unless they have considerable proof about the source of the tainting and strong evidence that more than just the fighter in question was impacted, it's all BS excuses. This is what I mean. Do you, for example, ever think you've managed to accidentally consume exogenous testosterone? It just seems it's always happening to the guys who would benefit from the stuff. Seems highly implausible.

Unless they have considerable proof about the source of the tainting and strong evidence that more than just the fighter in question was impacted, it's all BS excuses.

I am attempting to play devil's advocate here. In reality, I think these arguments are an attempt to create an air of mystery where there is none. "My team are going to look into this, etc." I eat a pretty clean, plant based diet but I am not a trained "nutritionist". If I submitted for a month of VADA testing but otherwise changed nothing about my diet, what are the chances I would test positive for one of these exotic substances boxers are regularly popping for? I think it's about as simple of a cover up as you can get. Oh, I popped positive? It must of been in the meat I consumed. It keeps things quite vague because they're not going to identify the exact source of the meat and then go into testing it. More or less getting you off as though, hey, yeah, I'll never eat from that restaurant ever again. It's really lame and I don't buy it.