Imagine God speaking to you with an important message. Don't you think you would think that matters?
Imagine the person who believes just as much in God, gave the best of his life to Him but finds out its all a big fraud. Don't you think that person would think it matters just as much?
You can see the passion in the extremes here. I get just as passionate when reading and responding as the next person. But they need to remember to put it aside afterward. They need to calm down. Occasionally, when I have sat with some ex-JW's, we have chatted briefly about some ongoing exchange on JWN, but mostly we don't. We have positive exchanges.
Even the potentially volatile mix of personalities and beliefs at Flipper's Lake Tahoe Fests put their differences aside and enjoyed each others' company. But on the internet, such passionate disagreements happen and are appropriate many times.