My conclusion after watching someone manually quote toot today is that @Gargron was right: We should never welcome software that implements it here.
@ocdtrekkie What is the fundamental difference between quote tooting and just... Linking to someone else's toot via URL?
Every toot has a unique identifier, and the UI could even be made savvy enough to sub-frame that content in.
@mtomczak So it all comes down to the presentation and simplicity making it more likely for people to use it as a communication style. A quote toot is effectively, yeah, just link preview on your own toot with a link.
But the ease of use and good presentation makes it likely people will do it, breaking the chain of communication in asymmetric ways.