I tend to follow the advice of George Bernard Shaw who must of visited Old MacDonald's farm when he said, "I learned long ago, never to wrestle with a pig. You get dirty, and besides, the pig likes it.”
I love the power of choice, people are free to voice their dumb opinions and I am free to ignore them. The bible is full of examples of how people responded to blasphemy of one form or another. Jesus had choice words and a whip for some of his opponents. Paul called upon self-circumcision one time. The apostles named names. The prophets called bears out of the woods, handed out leprosy and were friends of snakes, flies, blood and gaping holes in the ground.
If I choose to respond, I attempt to navigate flamers, trolls or honest misunderstandings or disagreements with biblical wisdom like:
“A gentle answer turns away wrath, but a harsh word stirs up anger,” Proverbs 15:1.