As I think of myself as a nice person, I have to say I see your point, but I guess you didn't understand me right. It has nothing to do _what_ you have to say, rather than _how_: People tend to craft crazy long articles and software, tools and howto's not to hear what they made all wrong. They did this in order to bring benefit to the world (mostly). And they wouldn't publish it if they thought they are not right. If you disagree with their opinion, please do so in a respectful manner. Respectful more often than not also includes being 'nice' - it won't kill you. Still, we are all just normal people, no matter from where.
I guess you also knew that _the_ definition of the word 'nice' is _not_ being ignorant. It's maybe _your_ definition, which is perfectly okay. Well, if it wouldn't mean that you basically just said that all nice people are ignorant. You see where that heads to hopefully...
In contrast to the text above I could've also said the following, which hopefully raises some emotional and super red flags on all ends:
Your answer is not really surprising, as people who are attending church on a regularly basis are more often than not very arrogant and also narrow-minded [0]. I react to these answers mostly with disgust. Seeing people who bring invalid examples is as necessary as a car accident[1]. Being arrogant about just anything and anyone who is not agreeing and justifying it with what was once heard in church won't take anyone far on the Internet.
[0] With that sentence I made everyone unhappy, not just you, also everyone who attends Sundays Mass
[1] I didn't mention you, still its offensive.
I hope you see the difference. Be humble, be kind, more people will listen and accept your comments. Not just here - also in your real life. Be to the point. That is my opinion, feel free to disagree.