I've seen every combination of texts walls working and failing as I continue with DF groups while playing. There was a time I entered a sync'd odin trial with DF and 6 people were new to the fight (and out of those 6, only 2 even had ironworks gear). The other tank and myself were both overgeared and I started to explain the fight to people. The other tank said, "not needed" and pulled and to my surprise, we beat it in one go. I've had that happen in god knows how many other DF odin runs and this was the first time I passed odin in DF sync'd. Ever.
I've also had runs where someone macro's everything and we wipe horribly because no one read or understood the explanation. There's every instance inbetween because you're playing with random people. Everyone has a different understanding and reaction to game mechanics. Some easily correlate certain boss moves with previous ones while others find the subtle difference in appearance to be a complete throw off to them. Some are able to bypass mechanics through pure DPS pawnage because they'll only have to worry about encountering it once, maybe twice instead of 5 times due to high DPS.
You can't really generalize imo. Every situation is different/unique because you have different people playing. And to each their own. Some strive from reading explanations, some must see to do, others can simply react well enough that they don't need any help. Then there are even some who are practically hopeless. Maybe due to connection latency... maybe due to bad reaction time, who knows?
But I have actually never seen the people who take the time to explain a fight ever rage quit after the 1st wipe. I've seen them rage quit after the umpteenth wipe, but they are usually the one's who stick it out. The one's who pull mid-explanation however, I almost always see leave 1 or 2 wipes in. So I have no clue what kind of DF experiences you are running into, but they seem to be very different from mine xD