activism

If we can tune out, move away from, and shun people with whom we disagree, is this course of action also acceptable? 
When confronted with the truth, a prominent science journalist claimed that facts don't matter in op-eds. Science journalism is dead.
A website that's purportedly focused on rigorous science journalism has published a conspiratorial anti-glyphosate rant, written by an environmental activist with no relevant academic credentials.