Does that surprise you? The "tainted" bitcoin narrative is produced by the governments for a simple reason. They can't control bitcoin, so they try to control us! They will try to control how we buy it and use it.
If they make people scared that Bitcoin can be tainted, they will all buy it using media they can control.

During my life so far, I 've heard different kinds of bullshit, but "tainted" bitcoin is by far one of the bullshitest