First, a discussion of one's religious beliefs is not necessarily counseling. Sometimes it is simply to inform.
Sometimes it is to test one's own beliefs/convictions to see if they will stand up under scrutiny by others.
Sometimes it is just in the spirit of friendly debate as a recreational exercise.
When others attempt to tell me that my personal faith sucks, is of the devil, is an offense to God (by whatever name), is superstition, is fairy tales, is hypocritical, is ignorant, is backward, or pick your unflattering metaphor or adjective of choice, they don't hurt my feelings. I just view them as poor ignorant souls.
When others tell me that I suck, I am the devil's helper, I am an offense to God (by whatever name), I am superstitious, I embrace fairy tales, I'm ignorant, backward, or pick your unflattering metaphor or adjective of choice because I identify myself as Christian, they don't hurt my feelings. I just view them as not only poor ignorant souls but meanspirited ones as well.
I personally would never tell another person that his/her faith sucks--I don't think many people are won over by being told they are going to hell--and I would take strong exception to people ganging up on somebody just because that person was of a different religious persuasion.
But if you're going to participate in a real life group intended to discuss a religious concept or participate on a thread discussing a religious concept, one should expect those participating to discuss that. And if you're going to be the only one in the group who sees something a particular way, you better be prepared for everybody else to disagree with you. (I seem to be in that position a lot.

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Those volunteering for that kind of critique simply shouldn't do that if they get their feelings hurt because everybody didn't embrace his/her faith or belief as s/he understands it.
But we don't have to be disagreeable to disagree either.