Diseases contagions between isolated populations is not an intentional act of agression from a bad invasor that wants to kill all the native population. There was also transmission of new diseases from native american populations to europeans without those crippling effects you might suggest are the main cause of the conquest of America.
The well established historical facts you mention are neither well established more less facts. For example, the Bodadilla report is argued in some circles to be just part of political bickering, which of course, is totally normal in the context, as it is the fact that Columbus itself has marginal control and presence over little territory for a very short period of time. To call it genocidal is still, inequivocally, for much that you dont like it, indoctrination
An unironicall one