The Quote Retweet is the most sinister piece of UI design perhaps in the history of the fucking universe. Unlike the reblog, which orders the original message first and then the poster's response, keeps the order of "posts" in which they were made. The original post is there and you can form an opinion on it before you read the responses.
Wheras the quote retweet you form an opinion on the shared content before you read it, as done by the poster's message, and this is either useless at best or dunking at worst, most of the time. It's disguised as the original posters' message with their avatar right there, so it doesn't appear as if they're just reposting the original message (which they are).
By reframing the shared message within the tweet and with the poster's message above it, there is only one reason to use the QRT; to add commentary. you think your pulling a fast one because your message appears above the idiot you're quote retweeting, but this has the primary effect of getting you to share something incendiary that you disagree with.
because a reblog is linear, it looks more like a conversation, and reblog chains often appear as a conversation that's being formed with people adding to it. you can't do that with QRTs, they just chain together and you only see the message and whatever the poster added to it
In this way, the Quote Retweet is almost designed to get people of opposing political sides to spread messages to each other, which turns the timeline into the hellzone we all hate and loathe.
