If you're unable to civilly and reasonably explain situations or your takes to others, it's very likely you are biting off more than you can chew, or really deep in dangerous waters.

100% this.

Sometimes I can't believe the amount of hostility I see when someone who is making truly fantastic claims is asked for some further evidence or some sources to support those claims.

You'd think that someone had peed in their Cheerios, kicked their dog, and called their mother a whore.

I think people who routinely have that reaction aren't very secure in what they believe/say, and resort to hostility as a defense mechanism.